Speedmaster 1-147-035 HiRise Vortec Intake Manifold Mach Pol for Chevy SBC

Chevy SBC 350 HiRise Vortec Intake Manifold Machine Polished Step up to the high-rpm power of an open plenum with Speedmaster HiRise intake manifolds. These cast aluminum manifolds accept square-bore carburetors and are pressure tested to ensure maximum performance. They start to make awesome power around 3,000 rpm. Step up to the high-rpm power of an open plenum Design for racing applications or for serious street performance Cast from steel molds for a tighter grain and reduction of porosity Pressure tested to ensure maximum performance