Reply to "Manifold Vacuum"

bdMember

Doug - Thanks for your comments. I don't think I have a vacuum leak in the brake system though. I am running a cam with a lot of overlap. The brakes work fine and the engine idle speed does not change when I apply the brakes. From my experience I would expect a change in engine idle speed if there were a vacuum leak in the brake booster system. I was just wondering why there is a difference between the two measurement locations and which power valve I should use. I think I have a 6.5" valve in the carb now.

5/8/067:46 PM

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