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Mod | | | Forums66 Topics128,064 Posts1,055,860 Members48,428 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2007 Posts: 156 Shop Shark | | Shop Shark Joined: Aug 2007 Posts: 156 | I would like to set the ignition timing by using a vacuum guage. I've done a search on this topic but would like to hear from someone who has actually done it. What is the procedure and what should my observations be? I would think that this would be the last step in engine tune up with the valve lash already set. Right now I have the octane selector set at zero and the spark firing at tdc on number 1 cylinder with no vacuum advance. | | |
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