Weiand classic 8-71 roots type blower with a two lobe helical rotor.
Weiand 8-71
Content Type: Supercharger
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8-71
Content Type: Supercharger
Updated on Jul 20, 2017 by SuperchargerKits.org
GMC 8-71 series roots blower designed and manufactured for use on 2 stroke diesel engines. Eventually modified by enthusiasts for strip applications then later street and marine. The 8-71 originated as a 3 lobe design with 30 degree helix.