Edelbrock part #7530 RPM Air-Gap AMC intake manifold is designed for 1967-69 290-390 c.i.d. V8 applications. This RPM Air-Gap intake manifold incorporate the same race-winning technology as our Victor Series competition intakes. The air-gap design features an open air space that separates the runners from the hot engine oil for a cooler, denser charge and more power. Includes standard oil fill and PCV provisions as well as early air conditioning support bracket accessory bosses. For square-bore carbs. No provision for exhaust-heated chokes. No exhaust crossover.