Putting a '70 383 together with the parts I have (read: not buying any additional parts).

Measured compression of 8.3:1 with stock pistons and 906's. Going with a 3.23 or 3.91 and an auto. I plan on using the Summit cam (224/234 @ .050 with .465/.488 lift and 114 centerline).

I've have been told by some here to advance it 4-6 degrees and others have warned me not to advance at all because of the split pattern. Anyway, this is over my head...HELP