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Old 03-01-2017, 10:09 AM   #25
monte385
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Join Date: Oct 2015
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Default Re: Current GM Q-jet Rules

Quote:
Originally Posted by oldskool View Post
While we're on the subject, I've got more questions.

(4) Haven't seen any pics of the Stock & SS cars running an air cleaner. So, aprox how much power is lost by using a good air cleaner set-up ? I assume there have been lots of dyno and track tests for this, thru the years.
FWIW I dynoed a street engine with a Qjet & with an air cleaner it lost 20-30 hp. We tried several a/c bases & filters & never could get the power up to no a/c pulls. This was a mild 421 that made 530 hp.
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