It depends on your overall load. "What else" you have hooked up. An MSD by itself is not a spectacular "draw." Also if you have factory stock wiring and ammeter, that is NOT gonna put up with something much over 50A especially after 50 years of nonsense
Ok, all my wiring is new and if 60 amps is enough. Would that be a round or squareback alternator, the car is a 68 barracuda and the 383 came out of a 66 charger. The wiring was upgraded from small block to bb wiring harnesses.
