Edelbrock Performer RPM Air-Gap intake manifolds combine the great street/strip benefits of the Performer RPM manifolds, but with the addition of Edelbrock’s patented Air-Gap. The Performer RPM is a dual-plane, high-rise designed with a 180º firing order which produces incredible top-end horsepower while retaining great throttle response. Their larger plenums and runners match high-lift cams, free flowing exhausts and other modifications of a high-output engine. The Air-Gap design features an open air space that separates the runners from the hot engine oil for a cooler, denser charge for more power. This is the same race-winning technology that is used on Edelbrock’s Victor Series competition intakes.