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Manifold Vacuum

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02-28-2014, 08:48 AM	#26
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: Manifold Vacuum Just for fun. My motor runs an aggressive solid cam grind that is 240/244 duration @50 in a 406. My idle vacuum is around 11 or 12 hot at 750 RPM. Engine vacuum at cruise is around 16-18 and shifting gears it shoots up to 23-24"s.

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