The Edelbrock Performer RPM Aluminum Cylinder Heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. These cylinder heads offer dyno-proven increases in horsepower, throttle response, and torque throughout the RPM range. These direct bolt-on heads deliver maximum performance in the 1,500-6,500 RPM range for high performance street. They offer improved power throughout the RPM range for greater throttle response and top-end horsepower. They have high flow 1.90 intake valves for use with pistons notched for valve clearance and a 0.60 exhaust valve. They have the top quality features like threaded inserts for rocker studs and exhaust manifold bolt holes for durability and superior strength, and manganese-bronze valve guides.
- Maximum performance in the 1,500-6,500 RPM range for high performance street
- 1.90″ intake valves are for use with stock pistons
- Exhaust valve is 1.60
- 60cc combustion with 170cc intake port
- Will not accept rail rockers