Edelbrock Performer RPM Air-Gap Ford 460 STD Flange/Sprd BoreEdelbrock part #7566 RPM Air Gap 460 intake manifold is designed for street and high performance 429 460+ c. i. d. Ford V8's with standard or Cobra Jet heads. The RPM Air Gap 460 incorporates the same race winning design that's been used on our Victor Series competition intakes for decades. 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. It also