The Edelbrock Victor Olds 350-403 manifold provides power levels never before available for competition single-carb 350-403 Olds engines. Featuring a single-plane G?Air-GapGg design, it accepts square-bore carb and offers significant horsepower increases over existing intakes in the 4500 to 7500 rpm range. It features a carb mount pad height of 7in and high-flow constant area 3.2-square-inch runners. The runners have been optimized to match the flow characteristics of Edelbrock Performer RPM aluminum cylinder heads No.60519 and the exit size, as-cast, is 1.28in by 1.94in with plenty of metal thickness for gasket matching and porting. Carburetor Recommendations: Any carburetor class allows. Installation Notes: Recommended intake gasket: Fel-Pro No.MS96027. No provision for OEM choke. Will not clear hood on 403 Olds, Firebird/TA.