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Old 11-09-2019, 02:30 PM   #4
chiefdave
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Join Date: Oct 2019
Location: Warsaw, MO
Posts: 52
Default Re: Thanks for the advice, still need more

Quote:
Originally Posted by Mart View Post
1, By all means. Hook it to manifold vacuum.

Manifold or venturi? The manifold vacuum on the engine is 20.5"hg at idle. I think that would pull it to full advance. The Holley 390 that I'm using has a port for metered venturi vacuum that is zero at idle and increases to 10" at 1500 rpm.
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