Exhaust manifold / Pip Kit EFI Brackets Chevy Big Block Black

Custom Marine, Incorporated (CMI) has announced the introduction of a new custom exhaust package specifically designed to enhance the overall performance of any sport boat equipped with a propulsion system powered by a 496 engine. Equipping an engine with the exclusive CMI stainless steel 496 Sport Tube™ Performance Package is sure to attract attention at any dock. But it’s on the water where this package will really turn heads. Simply adding this package to any stock 496 will result in adding nearly 60 more horsepower, boost mid-range torque by nearly 14 percent, boost fuel economy across the power curve and improve the engine’s overall running quality.