Air Gap Intake Manifold – Black. 1955-86 Small Block Chevy 265, 283, 307, 327, 350 and 400. Single standard square bore 4 barrel carburetors (not for Quadrajet or non-standard square bore – adapters available but not included). Includes adapters to change the center intake bolt holes to the later 87-95 “Center Bolt” heads. Producing power …