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**LingLing** · 05-09-2010

My car pulls about ~12 in/hg (Give or take 1 or 2 in/hg) at ~700-800rpms when it's at operating temperature, and anywhere from 16-20+ in/hg at cruising speeds. I think about 70mph in 5th gear I pull close to 18 in/hg. I do have 272 cams though, I'm not sure if how much of a difference 272's make when it comes to pulling vac at idle when compared to stock cams, but if you're at cruising speeds on the highway you should definitely be pulling more than 10 in/hg.

Does it stumble or sound rough when it's at idle?

05-09-2010	#2
LingLing AznKraut Join Date: Feb 2006 Location: Stillwater Drives: '03 325i, '98 Ranger '03 Duramax Posts: 1,374	Re: Low Vac at idle My car pulls about ~12 in/hg (Give or take 1 or 2 in/hg) at ~700-800rpms when it's at operating temperature, and anywhere from 16-20+ in/hg at cruising speeds. I think about 70mph in 5th gear I pull close to 18 in/hg. I do have 272 cams though, I'm not sure if how much of a difference 272's make when it comes to pulling vac at idle when compared to stock cams, but if you're at cruising speeds on the highway you should definitely be pulling more than 10 in/hg. Does it stumble or sound rough when it's at idle? __________________ A//// Guy: putting a dsm on a website as your fleet vehicle is like asking people to shop elsewhere Last edited by LingLing; 05-09-2010 at 11:42 PM..