Edelbrock Chev 396 - 502 Big Block RPM Performer Intake Manifold # ED7163Edelbrock Chev 396 502 Big Block RPM Performer Intake Manifold # ED7163 Edelbrock part #7163 Performer RPM 2 R intake manifold is designed for street 396 502 c. i. d. Chevrolet V8's with high performance rectangular port cylinder heads. This dual plane high rise manifold offers maximum horsepower with a broad torque curve. No provisions for exhaust heated chokes. Accepts late model waterneck, air conditioning, alternator and HEI equipment.