Supercharger: 6-71

The original Detroit GMC 6-71 series roots supercharger used on diesel engines and later modified for drag and then street and marine use.


Company: GMC
Type: Roots
In GMC Series: 71
Series 71 Units Include: 8V-71, 6V-71, 4-71, 3-71, 2-71, 8-71, 6-71
Usage: Street
Availability: Discontinued
Drive Type: Belt
Displacement: 420 c.i.d. / rev approx
Max Boost (PSI): 10-12 lbs on small block, 5-7 on big blocks
Self Contained: No
Rotor Length: 15 inches
Center Case Height: 7.5 inches


6-71 Kits

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    6-71 Articles

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    • 7482P Weiand Supercharger Kit Sale

      Note: This is an older article and kept for reference. As of March 20, 2017 it is currently unavailable. Price on June 3, 2015, was $4,093.19 USD. While checking out Amazon we came across an interesting sale on the 7482P Weiand Supercharger Kit. This is the classic 6-71 blower which is designed to generate 50+ … Read more


    6-71 News Items

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      6-71 Achievements / Milestones / Awards

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        6-71 Deals

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