How to dial in vacuum advance

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09-10-2006, 02:36 PM

green_blurr

3rd Gear Member

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Join Date: Jul 2006

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Posts: 694

How to dial in vacuum advance

I have a holly 4 barrel 600 electric choke carb wheres the screw to dial in the vacuum pressure on this carb?

09-10-2006, 03:40 PM

69mach1377

5th Gear Member

Join Date: Aug 2004

Location: ABQ, NM, USA

Posts: 2,593

RE: How to dial in vacuum advance

Huh? Vacuum during idle will vary by adjusting the idle mix screws toward the front of the carb. Adjust for max vacuum.

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