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18-20" of vacuum....Decent???
https://mail.slantsix.org/forum/viewtopic.php?t=4855
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Author:  BlackSpeed66 [ Thu Jan 23, 2003 9:46 am ]
Post subject:  18-20" of vacuum....Decent???

I finally got most of the leak problems with my carb fixed. She runs so smooth now. 40 psi of Oil pressure at idle around 600 rpm. I also tested the vacuum. Is 18-20" within Spec?

Thanks!

Author:  Dart270 [ Thu Jan 23, 2003 10:20 am ]
Post subject: 

Those are pretty typical numbers for a stock motor in good shape and tune.

Lou

Author:  Doc [ Thu Jan 23, 2003 4:21 pm ]
Post subject: 

About what you want to see, try giving it a little more timing advance, that may get you a bit more idle vacuum.
DD

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