The Edelbrock #605515 Performer RPM Rectangle Port cylinder heads are designed for Big-Block Chevy applications. The Edelbrock #605515 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed. These cylinder heads deliver great throttle response and power from 2500 to 7000 rpm. They also feature the highest quality intake and exhaust valves and valve springs. For use on pre-pollution controlled vehicles only.
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