Edelbrock Performer RPM 62-79 Pontiac 389-455 215cc 14 Degree CNC Cylinder Head - 87cc Chamber

Edelbrock Performer RPM Pontiac CNC cylinder heads have the same specifications as our popular Performer RPM cylinder heads for 1962-1979 389-455 Pontiac engines, but feature a CNC-machined combustion chamber. The CNC-machined chambers result in a consistent and precise chamber for improved flow performance. The 87cc chambers are ideal for 9.5:1 engines and will deliver excellent street performance on low-octane fuel. Both are patterned after the same port flange configuration as the 1969-70 Ram-Air IV Pontiac cylinder heads.

Note: Sold as a single piece, 2 pieces required per engine.

Features:
Combustion Chamber Volume (cc): 87
Intake Runner Volume (cc): 215cc
Exhaust Runner Volume (cc): 175cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic flat tappet
Intake Valve Diameter (in.): 2.110 in.
CNC-Machined Combustion Chamber: Yes
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Location: Standard
Exhaust Port Shape: Ram Air IV
Exhaust Port Location: Standard
Spark Plug Style: Straight
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.660 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.575 in.
Outside Diameter of Outer Spring (in.): 1.460 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Single
Retainers Included: Yes
Locks Included: Yes
Valve Stem Seals Included: Yes
Rocker Arm Studs Included: Yes
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Valve Cover Mounting Style: Perimeter bolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 14
Exhaust Valve Angle: 14
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Quantity: Sold individually.
Notes: Equipped with springs for use in hydraulic flat tappet camshafts. These heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit 8549.10 fuel rails.