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Old 01-22-2018, 12:23 AM
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Location: Ewa Beach, HI
Cobra Make, Engine: 1966 Street Beasts Cobra 427 S/C, 502 cid
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I found this video of a carbureted small block Chevy 372 being dyno tested. Both runs were on pump gas. First test: naturally aspirated. Second test: TorqStorm single centrifugal supercharger.

Horsepower improved from 460 @ 6400 rpm to 678 @ 6200 rpm, a 47% gain. They didn't specify the engine's static compression ratio, or how much boost was applied. For that sized engine, the 3.25" driven pulley will make 6-8 psi of boost, and the 2.98" driven pulley will make 8-10 psi of boost.

On one of the webpages I visited, TorqStorm states that their system is designed for use on stock or slightly modified engines. I guess everyone has their own opinion on what a "slightly modified engine" is. In my book, a carbureted 372 cid engine that makes 460 hp is not "slightly modified".

Last edited by 520SC; 01-22-2018 at 01:04 AM..
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