Speedmaster 1-147-059 Features:

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

  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.

  CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART