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Re: L6's with Offenhauser 4 barrel
1500 ? High speed idle screw and choke valve misadjusted. You may even want to take a second look at the Holley Electric choke installation.
https://documents.holley.com/199r11046.pdf
At hot idle do you have a good 600 rpm idle with no vacuum leaks?
I've never been a fan of the electric chokes so I adapted the Carter AVS to manual choke for my 292.
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'67 GMC 2500, 292, 4spd, AC
Last edited by RichardJ; 04-03-2024 at 12:29 PM.
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