Competition aluminum cylinder head combines the benefits of fully CNC-machined ports with a reduced (18ø) valve angle, raised intake ports, and optimized combustion chambers, resulting in significantly increased air flow and combustion efficiency. Head is sold individually as a bare casting.
- Cylinder Head Style:
- Bare
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- Yes
- Combustion Chamber Volume (cc):
- 66cc
- Combustion Chamber Style:
- N/A
- CNC-Machined Intake Runner:
- Yes
- Intake Runner Volume (cc):
- 272
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Raised
- Intake Valve Angle:
- 18 Degree
- CNC-Machined Exhaust Runner:
- Yes
- Exhaust Runner Volume (cc):
- 110cc
- Exhaust Port Shape:
- Square
- Exhaust Port Location:
- Raised
- Exhaust Valve Angle:
- 18 degree
- Intake Valves Included:
- No
- Intake Valve Diameter (in.):
- 2.180 in.
- Exhaust Valves Included:
- No
- Exhaust Valve Diameter (in.):
- 1.600 in.
- Valve Type:
- N/A
- Maximum Valve Lift (in.):
- N/A
- Valve Springs Included:
- No
- Valve Spring Type:
- N/A
- Outside Diameter of Outer Spring (in.):
- N/A
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- N/A
- Retainers Included:
- No
- Retainer Material:
- N/A
- Valve Stem Seals Included:
- No
- Valve Stem Seal Style:
- N/A
- Locks Included:
- No
- Lock Style:
- N/A
- Camshaft Style:
- N/A
- Spark Plug Style:
- Angled
- Guideplates Included:
- No
- Guideplate Pushrod Size:
- N/A
- Rocker Arm Studs Included:
- No
- Rocker Arm Nut Thread Size:
- N/A
- Accessory Bolt Holes Drilled:
- Yes
- Valve Cover Mounting Style:
- Perimeter bolt
- Heat Crossover:
- No
- Steam Holes Drilled:
- No
- Oiling Style:
- Through pushrod
- Machined for O-Ring:
- No
- Quantity:
- Sold individually.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen I
- Engine Sizes:
- 5.0L/305-5.7L/350
- Years:
- 1962-1986
