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| Vacuum pressure https://slantsix.org/forum/viewtopic.php?t=29923 |
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| Author: | superman_jjs [ Tue Jul 08, 2008 2:17 pm ] |
| Post subject: | Vacuum pressure |
How much vacuum should I see at idle? I have right at 7 inches and at choke it is about 20. Thanks, |
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| Author: | Aggressive Ted [ Tue Jul 08, 2008 2:52 pm ] |
| Post subject: | |
Depends upon the rpm, in gear verses out of gear, one barrel or two. I run about 16.5" in gear at 550 rpm on a 85 degree day. 18" out of gear with a Holley 1920. |
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| Author: | tophat [ Tue Jul 08, 2008 5:32 pm ] |
| Post subject: | |
With a carter 2bbl on a super six manifold and a stock cam I see 15"~16" at an 650 rpm idle in neutral. I have my dash gauge hooked in to a T fitting in the pcv hose. My second dash gauge is hooked in to a T fitting in to the vacuum advance at the distributor, I see as much as 20" inches at cruise. TopHat |
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