Free Shipping on Performance Auto Parts            Order by 11 PM EST for Same Day Shipping!

Weiand 7186 - Weiand 8-71 Street Superchargers

Weiand 7186 - Weiand 8-71 Street Superchargers
Representative Image
Product images may differ from actual product appearance.


8-71 Supercharger Kit
  • Big Block Chevy (Standard Deck)
  • Drive Pitch: 8mm
  • 11.5% Underdrive Ratio
  • Satin Finish

    Weiand 7186 - Weiand 8-71 Street Superchargers Details

    8-71 Superchargers - Big Block Chevrolet

    Note: This kit includes two extra 1/8" NPT plugs. Your manifold may have two 1/8" NPT ports tapped in the back of it. These are vacuum / boost ports that can be used for a boost gauge, boost reference power valves, or any other items that need to be connected to a boost / vacuum source. If these ports are not needed, use the included plugs to block these ports.

    Pop Off Valve Installation Guide

    Weiand 7186 - Weiand 8-71 Street Superchargers

    More than 40 Years in the Supercharger Business

    Weiand superchargers can be found in all aspects of racing, from tractor pulls to the quarter mile. When you pull into your local cruise-in or dragstrip with one of these 8-71 superchargers sticking through the hood you are sure to be noticed. Producing 200-300 more horsepower, the 8-71 supercharger is for the hard core enthusiast!

    All 8-71 kits come with the extra tough 8mm (two piece billet snout) belt configuration for maximum strength and durability.

    Installation Notes:
  • 8-71 Superchargers are perfectly suited for modified engines with 7.5:1 to 8:1 compression ratios. May require race gas unless pulley ratios are altered to reduce effective compression ratio below 12:1 (See 8-71 Supercharger Pulleys)
  • Kits are designed for stamped steel V-belt accessories. The use of billet pulleys may require custom machine work and/or spacers.
  • Must use short water pumps with maximum 2 "V" pulley.
  • Weiand highly recommendeds the use of a double keyed crankshaft and double keyed, steel, SFI approved balancer.

    Note: Will not clear GM HEI distributor. Engine not included.

  • Weiand 7077 - Weiand Supercharger Accessories
    Only $14.37

    Weiand 7078 - Weiand Supercharger Accessories
    Only $8.83

    Grime Boss A541S30X - Grime Boss Hand Wipes
    Only $9.99

    Grime Boss A544R10X - Grime Boss Hand Wipes
    Only $4.69