Don't disable the ignition by disconnecting the secondary ignition coil
wire. Disable the coil by removing the connector or removing power from the
coil . If you unplug the coil wire and the coil is still operating while
cranking the engine, the high voltage is going to be looking for a ground.
Since the high secondary voltage can't find a ground, the coil can be
damaged or it's life shortened.
Smal block 383 11:1 Compression, Six Inch rods, Internally balanced, Holley 600cfm Vacuum Secondaries. Too many parts to mention. Full Roller ZZ4 Drive ...
First Crank was to get Fuel to the cylinders, Second Crank you will see the
oil starting to come up to insure I have oil before I start it. Once I have
fuel and Oil I turn on the ignition switch.