Designed for street 396-502 c.i.d. Chevy V8s with large oval-port cylinder heads (1975 and earlier), the RPM Air-Gap incorporates the same race-winning technology that's been used on the Victor Series competition intakes for years. The Air-Gap design results in a cooler, denser charge for more power. The open air space separates the runners from the hot engine oil. As a result, the air/fuel mixture stays cooler. This cooler charge creates more power. Includes rear water outlets, two distributor clamp locations and nitrous bosses. Accepts all late model alternator and A/C brackets for the street. For square bore carburetors only. No provision for exhaust heated chokes and no exhaust crossover. Will not fit under stock hood of Corvette, 1965-67 Chevelle or 1970-81 Camaro.