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Re: Idle vacuum - why only 10 inches?
Brand new motor, made 330hp on the dyno against a rated 310hp, so seems spot on. No problems to speak of. Timing is about 10 BTDC at idle.
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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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