Yeah i know mags have been replaced in drags, I was retro-referencing there
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I was wrenching at an Olds store when GM first came out with their high energy ignitions, 40K+ volts, .080 plug gaps, high resistance wires, once a plug was fouled it would not self clean like lower voltage points units would.
The hot spark is just too short of a duration to burn off the fouling.
The reason for the advent of the H.E. units was stricter emissions controls meaning leaner running engines.
Now, the old dual point units like Mallory would produce a hotter spark, but it would last longer too. I think the newer ignition units are do this electronically
