Which vacuum source should I use, ported or manifold? I've never tried it using a vacuum gauge before, alsways used a timing light. But after reading some of the posts about setting timing, I would like to try it. I'm just unsure about where to hook up the gauge.
Just for the record, my dizzy is an aftermarket one that does not use a vacuum advance, so there is no line from the carb for one. I also have dual carbs, if that is an issue.
