Black Anodized Marine Intake Manifold for Small Block Chevy, Vortec Style. Similar to Edelbrock 2516. Can be used for street applications as well. Does not need to be used for Marine application. Only 1 of the 3 available has been opened. 2 are still in originally sealed boxes. Good-looking intakes, good performance. Engine Block Deck Height: Standard deck. Intake Style: Dual plane. Basic Operating RPM Range: 1,500-6,500. Intake Manifold Height: 4.720 in.