06-05-2003, 05:38 AM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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You definately don't want a 10.5 PV.....I use only 2.5 in all my Holley applications. You only want the PV open at WOT...and 2.5 inches will take you well past the speed limit... rule of thumb if at end of quarter mile vacuum is over 1 inch carb is to small, if reading is zero, carb is to big....you want to shoot for a .5-1 inch reading at end
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Jack
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