The Edelbrock #60555 Performer RPM Rectangle Port cylinder head is built for Big‑Block Chevy applications and provides strong power from about 2,500 to 7,000 rpm. These heads are aimed at street performance, street rods and muscle cars that need higher‑revving capability and include quality valves and valve springs to support hyd roller cam operation. They are intended for pre‑emissions vehicles seeking extended top‑end power.
Edelbrock Cylinder Head BBC Performer RPM Rectangle Port for Hydraulic Roller Cam Complete (Ea)