Quote:
Originally Posted by Ole Don
My 312 had some compression, and an Isky cam, and delivered about 11 inches of vacuum. It was enough to make the wipers run well, unless it was in fifth gear on a hill.
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That's about where the 406 was in my Starliner. It also makes a difference when the intake valve closes ABDC. Running 2x4 I think I was running 4.5 p.v.'s with progressive linkage and it ran like a raped ape.