Electronic ignition

[Richard in Florida]

Originally Posted by Ol' Ron

When Richard was doing all his ignition testing, he tried numerous plug gap settings and as Bubba says the stock works best. Especially on a low compression engine like a flathead. Max plug voltage id quite low 8-10 K on a 8.5CR.

Yup, all true. A smart man taught me that it's the engine, the combustion chamber, that dictates plug gap... not the ignition system.

I love reading posts in "muscle car" forums by guys bragging about how wide their plug gaps are. In our world, all mammoth plug gaps do is wear out your ignition system in a big hurry.