Edelbrock 7576 RPM Air-Gap Intake Manifold for Small Block ChryslerRPM Air Gap Small Block Chrysler Intake Manifold Edelbrock part #7576 RPM Air Gap intake manifold is designed for 340 360 c. i. d. Chrysler V8's and 318 c. i. d. engines with 340 360 cylinder heads. This RPM Air Gap incorporates the same race winning technology that's been used on our Victor Series competition intakes for years. The Air Gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler,