The Edelbrock Performer RPM 2‑O intake manifold is a dual‑plane, high‑rise design for street 396–502 c.i.d. Chevrolet big‑block V8s with large oval‑port heads (1975 and earlier). It delivers strong horsepower while retaining usable torque and driveability, and it accepts late‑model waternecks, air‑conditioning, alternator and HEI equipment. There are no provisions for exhaust‑heated chokes.
Edelbrock Performer RPM 396 Oval Manifold