Article: Vacuum Gauge Diagnostics

[Supracentral]

You can view the page at http://www.supramania.com/forums/content.php?200-Vacuum-Gauge-Diagnostics

 

[Devin LeBlanc]

10 in hg vacuum can be 100% normal too at idle. If you have 280 deg cams I personally pull 20 in hg on my motor at idle 650 rpm