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Old 06-17-2006, 02:30 PM   #20
Rev
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Default Re: Holley carb. gurus needed!
Quote:
Originally Posted by 82 GT
Idle vacuum is between 14-15hg(Park) and I'm running a 6.5 power valve.
I'm beginning to wonder if maybe my PV is closing before the end of the run and shutting off the power circuit of the carb.
I have a vacuum gauge I'm going to hook up so I can watch it during a pass down the track.

Remember that it's when the manifold vacuum is below the rating that the power valve is open. At WOT, the vacuum is right at 0 or a hair more. No matter what pwer valve # you use, it will always be open at WOT.

Rev
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