Set of high performance marine manifolds for Big Block Chevrolet by Stainless Marine, complete with risers. Each assembly weighs less than 30lbs. There appears to be 3 spots on the welds that could be touched up (as pictured). Get exactly what you see in the photos. 

Free Shipping to Canada and the continental USA (sorry Alaska and Hawaii). Will ship anywhere else at buyers expense, please ask for quote first.

Big Block GM Hi-Torque Standard Kit

The Hi-Torque manifolds feature state of the art design with a single wall internal casting that is enclosed in a press formed aluminum jacket creating a fully water cooled manifold. A highly polished stainless steel riser comes standard as well as bolts, gaskets and fittings.

Industry wide, Stainless Marine exhaust systems are recognized for increased horsepower, remarkable weight savings, an exclusive five-year warranty and an incredible value.

Tests by both Hot Boat and Trailer Boat Magazines revealed increases of 3.2 to 6.5 MPH on MerCruiser Big Block powered 22′-24′ boats.

The unique construction results in the heaviest manifold weighing only 23 pounds A huge savings compared to cast iron Stainless Marine is one of the top quality and least expensive systems available today. Note: All systems based on Bravo applications.