Designed for 1961-65 Chevy 348/409 big-block, cylinder heads feature OEM port locations and valve angles for bolt-on convenience, 220cc intake and exhaust ports, improved port design, screw-in rocker studs and hardened guide plates.
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- No
- Combustion Chamber Volume (cc):
- 16cc
- Combustion Chamber Style:
- Closed chamber
- CNC-Machined Intake Runner:
- No
- Intake Runner Volume (cc):
- 220cc
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Standard
- Intake Valve Angle:
- 0 degree
- CNC-Machined Exhaust Runner:
- No
- Exhaust Runner Volume (cc):
- 115cc
- Exhaust Port Shape:
- Round
- Exhaust Port Location:
- Standard
- Exhaust Valve Angle:
- 0 degree
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 2.190 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.720 in.
- Valve Type:
- N/A
- Maximum Valve Lift (in.):
- 0.600 in.
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Dual W/Damper
- Outside Diameter of Outer Spring (in.):
- 1.540 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Manganese bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- 3-angle
- Retainers Included:
- Yes
- Retainer Material:
- Steel
- Valve Stem Seals Included:
- Yes
- Valve Stem Seal Style:
- Positive stop
- Locks Included:
- Yes
- Lock Style:
- 7 degree
- Camshaft Style:
- Hydraulic roller
- Spark Plug Style:
- Angled
- Guideplates Included:
- Yes
- Guideplate Pushrod Size:
- 3/8 in.
- Rocker Arm Studs Included:
- Yes
- Rocker Arm Nut Thread Size:
- 7/16-20 in.
- 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 big block W-engines
- Engine Sizes:
- 5.7L/348-6.7L/409
- Years:
- 1958-1965
