The experts on here have answered this. I will add that my MSD Pro-billet dizzy was so far out of phase that the tip of my rotor melted off and flew out at the track one day. The top of the rotor was physically melted where the metal was. The heat generated by my high output coil jumping that gap was intense. I put an adjustable MSD rotor in there and found it was nearly at the midpoint between the two terminals.

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)