Edelbrock Rpm heads on 360

Between 32-34 degs total for power. They are pretty sensitive to timing changes. The best way is with everything else sorted out, fuel,traction ect. The car needs to be consistent. You go to the track and start at say 30 degs and make a run and keep adding 2 degree until you lose mph. Then back up 2 degs, but 32-34 for power should be a good starting point while you work on all the other things.