Quote: I know about welding up the slots to limit the advance but is it basically trial and error? In a Mopar Muscle article they welded up the slots in a SB dist from .480" down to .370" to get 32-34 total with 15 initial, will this be about the same on a BB?
Yes. A 0.370" slot length will give you about 16 degrees of mech. advance. If you want 34 degrees total, you would then set initial at 18 degrees.
