8-71 Pro-Street Supercharger Marine Kit

PART #: 7189P

UPC #: 032474718914

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 water. They will accommodate 2 “V” belt pulleys and the 7189 and 7189P kits are designed for use with up to 3 “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.

Chevy Big Block for applications requiring 3 "V" pulleys (NOT compatible w/ Mercruiser, OMC or Volvo Penta accessory drives without modification) Long Nose, 3" Gilmer Drive Belt, Polished Finish

Installation Notes

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.

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