The Edelbrock Performer RPM cylinder head for 1962–1979 Pontiac 389–455 engines is patterned after the Ram Air IV head to deliver strong throttle response and power from 1,500–6,500 rpm. Available with 72cc combustion chambers for higher compression builds, it includes quality intake and exhaust valves and valve springs and is intended for street performance, daily drivers, street rods and muscle cars seeking usable power gains.
Edelbrock Cylinder Head Pontiac Performer RPM 72cc for Hydraulic Roller Cam Complete (Ea)