If you are looking for a manifold to use with your 8-71 or 6-71 supercharger, look no further than Speedmaster. These Speedmaster 8-71 and 6-71 supercharger manifolds are aluminum constructed and suitable for competition or street use. They feature: Heat treated cast aluminum Direct 6-71 / 8-71 blower bolt on Will clear distributor (except Hei) Raised plenum for better distribution of air Threaded water ports near water outlet 5/16" threaded holes for backfire valve 5-3/8" manifold height 2" x 1 1/4" Intake Ports

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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