Performance timing

^^And that is true^^ Crackedback on here talks of "as much timing as it can stand" inititial without bucking on the starter. I like to tune idle for highest vacuum reading. Either of these two is a guide for initial

Total under power you need to look for ping (knock) and learn to read plugs and look for detonation. Once you have established those two points-----workable initial and total under power, you can "go back" and have the dist recurved to effect those two timing points. And work with the springs to get it to advance WHEN (at what RPM) seems best