Like everyone else, I'm trying to achieve that "perfect" timing setting that will allow my engine to run it's best. Since the whole thing is built out of aftermarket parts, any factory tuning specs are out the window. Without going into all of my engine's particulars, it there a systematic way to determine the total timing that is appropriate for any engine. I realize that almost any of the engines components (cam, heads etc.) can determine the total timing number, but how do you find it? I could just jack the distributor up until I get detonation, then back it down some, but it seems that this wouldn't really indicate the optimum advance. You guys are very helpful and I really enjoy reading your responses to my questions. Thanks!