Thread: 1.5 inches of vacuum

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What if ain't using my vacuum advance, I never have, don't really know the reason. Should I try it. I just figured at wide open throttle the vacuum drops to 0 so vacuum advance really wouldn't help. But should I just hook it up and run it up to 3000 and see what I have. Thanks

Just another thought, should I try to go with a better ignition, right now its just all stock hei ignition. I've read if your running race gas that you should have a little better ignition. Maybe that would clean up my idle a little bit and help through out my rpm band. Also would elavation change my vacuum, say about 2000 feet higher.