This is an outstanding high performance street manifold with all the latest manifold design refinements. It features a full open design under the plenum for maximum air circulation to help keep the incoming charge cool for premium power production. It features a spread bore carb flange for those of you who want to run the original Rochester carburetor and we also include a square bore adapter plate and gasket for those who desire a square bore (Holley, Edelbrock, Carter) carburetor.
