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Originally Posted by 82 GT
Not exactly true. Manifold vacuum WILL raise as rpms increase. I DID read that in my Holley book....LOL
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Yup, it's true. Reread the book or just check what happens with a gauge when you stand on it. The vacuum will fall to near 0 and stay there while at WOT. If it doesn't, it means you're using a carb that's too restrictive.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe