Speedmaster 1-147-053 HiRise Intake Manifold Mach Polished for Ford SB

Ford SB 260 289 302 Windsor HiRise Intake Manifold Machine Polished This Speedmaster HiRise manifold for SB Fords can be used for racing applications or for serious street performance. It has a number of unique features, such as a rear water crossover passage, nitrous/injector bosses, and four corner water ports. The port size on this manifold is 1.09" x 1.94", which is larger than some competitive 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