The Edelbrock Performer RPM SBC 64cc cylinder head is designed for 1955–1986 Small-Block Chevy applications and tuned to improve throttle response and power across the usable range for street, rod and muscle-car builds. These heads retain stock compression ratio while offering upgraded porting, valve-spring capability and combustion-chamber design to enhance midrange torque and drivability on pre-emissions small-block Chevy engines.
Edelbrock Single Perf RPM SBC 64cc Head Comp