Intake Valve Size Options FMBC
Intake Valve Size Options FMBCP
Valve Guides Options FMBC
Valve Guides Options FMBCP
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valve Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valve Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valve Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valve Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valve Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees
Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) Labor: CNC Port Cylinder Heads Perform Undercover Blasting on Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.055" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 210cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.055" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Spring Package Options FMAH
Intake Valve Size Options FMAH1
Intake Valve Size Options FMAH2
Intake Valve Size Options FMAH1P
Intake Valve Size Options FMAH2P
Guide Plates Options FMAH1
Guide Plates Options FMAH2
Guide Plates Options FMAH3
Guide Plates Options FMAH1P
Guide Plates Options FMAH2P
Guide Plates Options FMAH3P
Valve Guides Options FMAH1
Valve Guides Options FMAH2
Valve Guides Options FMAH1P
Valve Guides Options FMAH2P
Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) 295D - Isky 295D Valve Springs Set 4299MR-16 - Spring Locators, Set 1750-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2)502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.750" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6103 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6319 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs, 3/8-24 Thread, 1.75" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.020" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.020" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) F6114 - Ferrea Intake Valve 2.055" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 8) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6104 - Ferrea Exhaust Valve 1.600" Head Diameter X 11/32" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 8) Install CHE 5/16" Valve Guides (Quantity: 8) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) 502-309-200-E-6-A - CHE Blended Bronze Alloy 5/16" Valve Guide (Quantity: 16) F6321 - Ferrea Intake Valve 2.055" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) F6144 - Ferrea Exhaust Valve 1.600" Head Diameter X 5/16" Stem Diameter X 5.010" Overall Length (Quantity: 8) PSICT1225-16 - PSI 1225 Valve Springs Set 4299MR-16 - Spring Locators, Set 1730-16 - Valve Spring Retainers, Tool Steel, 10 Degree, 1.500" Outside Diameter, .700" Inside Diameter, Set of 16 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs, 7/16-20 Thread, 1.900" Effective Stud Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Remove Factory Installed 11/32" Intake Valve Guides (Quantity: 16) Install CHE 5/16" Valve Guides (Quantity: 16) Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.020" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs 3/8-24 Thread, 1.750" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs 3/8-24 Thread, 1.750" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4505-16 - Rocker Arm Studs 3/8-24 Thread, 1.750" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs 7/16-20 Thread, 1.900" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs 7/16-20 Thread, 1.900" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees Bowtie Vortec Heads *FULLY MACHINED & ASSEMBLED Parts: 19331470 - GM Bowtie Vortec Cast Iron SBC Heads (Quantity: 2) XP67992 - REV Steel Exhaust Valve 1.600" Head Diameter X 11/32" Stem X 5.060" Overall Length (Quantity: 8) CL-1651JS - REV Steel Intake Valve 2.050" Head Diameter X 11/32" Stem Diameter X 5.060" Overall Length (Quantity: 8) PAC-1340-16 - PAC 1.500" OD Racing Valve Spring Set 2399MRTS-16 - Tool Steel Retainers, 8 Degree, Set XSL-3340-16 - Xceldyne Spring Seats, Set 1509VL-16 - Precision Valve Locks, Set 343530 - Valve Seals, Set 4512-16 - Rocker Arm Studs 7/16-20 Thread, 1.900" Effective Length 4808-8 - Comp Cams Pushrod Guide Plates Labor: CNC Port Cylinder Heads Undercover Blast Cylinder Heads Machine Spring Pads Hone Guides to Proper Clearance Newen Valve Job For 2.020" Intake Valves Blend Valve Job CC and Mill Heads to Particular Chamber Size 60-62cc Debur Heads After Mill Specs: Intake Runner Size: 170cc Combustion Chamber Size: 60-62cc Intake Valve Head Diameter: 2.050" Exhaust Valve Head Diameter: 1.600" Intake Valve Seat Angle: 45 Degrees Exhaust Valve Seat Angle: 45 Degrees 
