coil without ballst resistor?
My small-body HEI conversions use a round, oil filled coil, NO BALLAST RESISTOR, and spark plug gaps no larger than .045, maximum. Oil filled coils MUST be "stood up", NOT laid on their sides.
Black coils I use, O'Reilly Master Pro, 2-5195
Lets stop calling 'coil saturation time', by its old name, 'dwell time', shall we!