Speedmaster 1-147-053 Features:

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

  Emissions Note:

  This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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