The Edelbrock Performer Buick 455 #2146 intake manifold is designed for street 400-430-455 c.i.d. Buick V8's. Manifold not equipped with EGR. Will fit cold air induction hoods. Will not fit Buick 350. The Edelbrock Performer 289 #2121 intake manifold is a dual-plane, low-rise intake manifolds with a 180? firing order and patented runner design that you won't find in other brands.
