Performer RPM Small Block Chevy AIR-Gap Intake Manifold. Fits Small Block Chevy Engines From 1955 Through 1995. Will Not Fit "Vortec" Headed Engines With 4 Bolts Per Side. Edelbrock part #7501 RPM Air-Gap #7501 intake manifold is designed for 1955-86 262-400 c. The award-winning RPM Air-Gap intake manifold incorporates the same race-winning technology that's used on our Victor Series competition intakes.
The air-gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power.