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#11
02-22-2007, 04:25 AM
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Re: Holley carb power valve questions
I use a "window" type, 8.5 in the primary, with the secondary pluged. If you go this route you will have to increase the secondary jetting. I believe I am went from 76s to 84 jets. Seems to work great.
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Dean 
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#12
02-22-2007, 06:57 AM
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Re: Holley carb power valve questions
If you've got 13 inches at idle you don't need a 6.5... try some 10.5's.
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~JAG~ NCRS#65120 68 GTO HO 4 spd Alpine Blue /Parchment 2 owner car #21783 71 Corvette LT1 45k miles Orig paint - Brandshatch Green - National Top Flight - last known 71 LT1 built. 71 Corvette LT1 42k miles Original paint - Black - black leather - only black LT1 known to exist. NUMEROUS Lemans blue Camaros, Monza Red and Daytona Yellow Corvettes & a Chevelle or two... Survivors, restored cars, & other photos https://picasaweb.google.com/lh/myphotos
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