Designed for street 396-502 c.i.d. Chevrolet V8s with high-performance rectangular-port cylinder heads. This manifold offers the latest technology in dual-plane high-rise design. It offers maximum horsepower with a broad torque curve for great street high-performance. No provisions for exhaust heated chokes. Accepts late-model waterneck, air-conditioning, alternator and HEI equipment. Will not fit under stock hood of Corvette, 1965-67 Chevelle or 1967-81 Camaro. Edelbrock Performer RPM 2-R Intake Manifold 7163 Cast - Non-EGR - 1500-6500rpm - For 4 bbl Carb - Chevy BB 396-502 - For High-Performance Rectangular Port Cylinder Heads Only - Street/Hi Performance Use OnlyBest for the Ultimate in Street High-PerformanceDesigned for 1500 to 6550 RPM Street-Driven PowerDual-Plane High-Rise Intake w/180 deg Firing OrderProduces Incredible Top-End HorsepowerRetains Good Throttle Response and AccelerationLarger Plenum and Runners Maximizes Other UpgradesEdelbrock Total Power Package Maximizes GainsDesigned for Square Port HeadsPit Stop USAoffers Edelbrock Performer RPM 2-R Intake Manifold 7163 at low everyday prices. Be sure to check out all of the products from Edelbrock including Edelbrock Engine Parts and Accessories, Edelbrock Intake Manifolds, Edelbrock Intake Manifolds - BB Chevy, Edelbrock Intake Manifolds - BBC.