Professional Products Cyclone Intake Manifold 1955-1986 Small Block Chevy

The Cyclone intake manifolds are the lowest profile and the only one that is street legal on polution vehicles. It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of a square bore carb. To remain street legal with a square bore carb, you must use one that is approved as street legal for your application.