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Weiand 6-71 Supercharger Kit - Polished

Chevy Small Block (1955-86), NOT compatible w/ Mercruiser, OMC or Volvo Penta accessory drives and requires short water pump and 2 "V" pulley, Long Nose, 3" Gilmer Drive Belt, Polished Finish

PART# 7487P

Not Available Online

Weiand does not recommend using a supercharger with a Gilmerm-toothed belt and pop-off valve in an enclosed engine compartment. There is a high risk of explosion in the event of a backfire. 6-71 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.

Overview

Weiand’s 6-71 blower kits are equipped with exclusive two lobe rotors for maximum boost at lower RPMs and feature all new construction including the rotors, case, end-plates, manifold and snout. Billet belt tensioner components and V-belt pulleys round out the package to give you everything necessary for installation on your auto or boat. Kits are engineered to produce 10-12 lbs of boost on small blocks and 5-7 lbs of boost on big blocks but are a simple pulley change away from pump gas or hard core racing. All 6-71 kits are equipped with the extra tough 8mm (two piece billet snout) belt systems for durability while on the street or water. 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.

Features:

  • Part # 7487P is no longer available and is superceded by Part # 7587P
  • Long Nose
  • 3" Gilmer Drive Belt
  • 11.5% Underdriven Drive Ratio w/ Included Pulley Set
  • Satin Finish
  • Develop 550+ Horsepower out of a mild 454 Chevy
  • Instant, full-time power every time you hit the throttle
  • Substantially increases torque for heavy boats and pulling up skiers
  • Various kits also available to suit most marinized engines

Specs

Blower Size6-71
BrandWeiand
Emission Code3
EngineChevy Small Block V8
FinishPolished
Product TypeSupercharger
Supercharger Drive Pulley1/2 Inch Pitch

Tech Resources

Weiand does not recommend using a supercharger with a Gilmerm-toothed belt and pop-off valve in an enclosed engine compartment. There is a high risk of explosion in the event of a backfire. 6-71 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.

Parts & Kits

Emissions

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.

Some parts are not legal for use in California or other states with similar regulations.