Weiand 8-71 Supercharger Kit - Polished

Obsolete - replaced by part # 7386P

PART# 7186P

Not Available Online

  • Part # 7186P is no longer available and is superceded by Part # 7386P
If it’s maximum power you are looking for, check out the 8-71 series! Built utilizing all new cases, end-plates, manifold and snout and reconditioned GM 3 lobe rotors for peak performance under demanding, high RPM conditions. 8-71s are engineered to produce 10-12 lbs of boost on small blocks and 5-7 lbs on big blocks (depending on application and engine efficiency). These superchargers are for the hard core enthusiast! All 8-71 marine kits are equipped with the extra tough 8mm (two piece billet snout) belt systems for durability while on the street or water. They will accommodate 2 “V” belt pulleys. All kits can be used with some marinized engine accessories, but may require extensive modifications to bracketry or mounting locations. All superchargers are built in Weiand’s state-of-the-art manufacturing cell and each supercharger is 100% boost tested to help you squeeze out maximum power & efficiency.
Blower Size8-71
Emission Code3
EngineChevy Big Block V8
Product TypeSupercharger
Supercharger Drive Pulley8mm Pitch
Will not work with Gen VI engines. Weiand does not recommend using a supercharger with a Gilmer-toothed belt and pop-off valve in an enclosed engine compartment. There is a high risk of explosion in the event of a backfire. 8-71 superchargers are perfectly suited for engines with 7.5:1 to 8:1 compression ratios but may require race gas unless pulley ratios are altered to reduce effective compression ratio below 12:1. Weiand recommends that all kits use double keyed crankshaft and double keyed, steel, SFI approved balancer. Kits include manifold, blower assembly, drive snout, pulleys, belt and hardware. Will not fit 8.1L (496 cu in) or 7.4L Vortec big blocks. Big Block kits fit standard deck motors only. Spacers are available for tall deck engines. Due to the wide variety of installation possibilities, it may be necessary to consult with a Weiand Supercharger Technical Rep at 270-781-9741 for assistance in selecting the proper kit for your application.
7070Weiand Supercharger Idler Pulley Bracket - Satin

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

*Free Shipping & Handling only offered to the continental US on orders over $100.
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