Performer RPM 454 Rectangle Port Cylinder Heads - Single - Complete ED60559 Product:BB Chevy, 118cc chambers, great torque and horsepower up to 6500 rpm Made from steel and coated

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Performer RPM 454 Rectangle Port Cylinder Heads - Single - Complete ED60559 Product:BB Chevy, 118cc chambers, great torque and horsepower up to 6500 rpm Made from steel and coatedPerformer RPM 454 Rectangle Port Cylinder Heads Single CompleteBB Chevy, 118cc chambers, great torque and horsepower up to 6500 rpm ED60559 60559 Performer RPM heads are perfect for street performance, daily drivers, street rods and muscle cars where seat of the pants performance is needed. These heads give great torque and horsepower up to 6500 rpm. Designed for street high performance big blocks operating from 2500 7000 rpm. Specially designed ports