Edelbrock RPM Air-Gap Intake Manifold Black Finish (ED75163)RPM AIRGAP MANIFOLD SBC VORTEC Small Block Chevy Vortec, 1500 6500 rpm Part Number: ED75163 Based on the powerful Performer RPM Vortec #ED7116, this single four barrel intake is designed for 262 400 Chevy V8 with 1996 and later Vortec (L31) cast iron or the new Edelbrock E Tec aluminium heads. The RPM Air Gap manifold delivers outstanding performance using the same air gap technology found in our race winning Victor manifolds. This unique design