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So mr P ,, you are saying I should be running eg. 80 frt jet and 88 rear jet size with pv's with that being 8 jet sizes apart ?
why then are the stock jets like 80 and 81 ?
i'm confused . I heard of to jet up 8 sizes if don't use pv's .



Are you running a PV both front and back? You can
check the Holley web site for the stock jetting if
you know the model number