[Keithc8]

All good points on the timing. Like mentioned it ha a ,lot to do with the amshaft and ghe engine build. Almost all FE engines will like 38 to 40 total if you have the fuel for your compression. We can run this much timing on most street egines with about 10 to 1 compression on premium pump gas. In most cases with a MSD distributor with the black bushing this will put your initial at about 16 to 18 degrees. Will normally run he light silver spring with the blue spring and this gets the timing pretty much in by 3000 rpms.
The less vacuum you have the more initial timing you may have to run to get the idle quality right like mentioned earlier.
Good luck, Keith