[Gregski]

Originally Posted by hatzie

Advance can be adversely affected by one more setting that's usually ignored...
What's the end play on the distributor gear. http://www.chevytalk.org/fusionbb/showpost.php?post/1257140/Measuring HEI gear end play.
It should be 0.010" +0.004" - 0.000" but most are set up way too loose. Every 0.0128" is 1° of advance as the gear lifts so the closer you can get to 0.010" the better.

It's cheap and easy to fix...

thanks I just checked mine and its at .065 and that's with one shim already in there

I also checked my old original OEM points distributor and it has about the same at .062

keep in mind a gasket will take up some of that space, I think at least half