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Re: Idle vacuum - why only 10 inches?
I went out and checked compression, thinking if valve timing were off messing up idle, it should mess up cranking compression too, but I got a full 160psi which I think is probably about right for 9:1.
Does that point anyone in any direction?
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1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
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