My 364 made most power at 39*. Same topend on my 4.125 stroke 436ci and dyno session it appeared the timing was at ~38* where it made most power but I don't think Ryan's light was working correctly so the distributor was just marked. Unfortunately I had to take the distributor out when putting the engine back in so the only thing I could do was line up the mark as close as possible and that's where it comes up around ~38.

I still have gremlins on this car and it still doesn't appear to have the power that it should have. I am hoping to get it to a chassis dyno soon so I can find out exactly where the timing should be. Will keep all informed. :-)