Edelbrock Performer RPM cylinder heads for 1965–1976 Small-Block Oldsmobile 350–403 c.i. engines with a hydraulic roller cam. These 356-T6 aluminum heads feature 68 cc combustion chambers, 200 cc intake and 130 cc exhaust port volumes, and 2.072" intake and 1.680" exhaust valves in OE locations. They require a 3.9375" minimum bore and include mechanical fuel pump clearance.
Edelbrock SB Oldsmobile Performer RPM Cylinder Heads for Hydraulic Roller Cam