All of Professional Products intake manifolds incorporate many new features not found in competitive models. Some of today's most popular manifolds were designed 30 years ago and the makers have never bothered to update the tooling to include many of the new features desired by performance enthusiasts. Professional Products have engineered those features into their manifolds.
Common Features Include - Rear water crossover passages (Ford) - All ports very accurately positioned due to advanced casting techniques - Every tapped hole in each manifold is chased with a tap to clear polishing residue and assure the threads are not damaged - All polished manifolds are meticulously hand polished to show quality
The terrific Cyclone+Plus is a step up from the Cyclone. Due to its slightly taller height, it can provide more power and torque. It is about 3/8" taller than the Cyclone. It also has a rear water crossover (the only SB Chevy manifold made by anyone with this feature), nitrous bosses and a square bore carburetor flange. It comes in versions with or without intake gaskets, a tube of gasket sealer, 12-point stainless bolts, and all necessary pipe plugs. A great medium performance manifold that includes all the latest manifold technology for the street.
