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How many of you folks have done a dyno or street wide open test to see how much vacuum you have? After much thinking and research I`m thinking my 3.5 p/v COULD be closing at wot if I`m pullin more that a few inches of vacuum............Anyone?

Any vacuum basically sez restriction. I know some who do carb sizing that way. Through the lights, you wanna see no more than 1.5" for a race only application.

Fastest 300