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Discussion Starter · #1 ·
Has anyone ever dyno'ed back to back using a crankcase evacuation system, hooked-up and un-hooked to see if you picked-up any horsepower.

I've seen something on a BBC but they have a small crankcase so the effect maybe bigger with the system on a Chevy.

G-
 

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I have never done a back to back pulls on my dyno for that before, but i do know that the engine seems to like the vacuum pump, it has no oil leaks and promotes better gasket seal for sure. These big motors we are building ahve huge parts moving around in the cse that creates lots of windage and a pump helps IMO.
 
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