Edelbrock Manifold Victor Olds w/ Standard Square-Bore FlangeEdelbrock part #2810 Victor Oldsmobile 455 drag racing intake manifold provide power levels never before available for competition single carb 455 Olds engines. In independent flow testing, our port matched design out flowed the best fully ported manifolds on the market. Featuring a single plane "Air Gap" design, they are available for square bore or 4500 Series carbs to accommodate many competition applications, and offer significant horsepower