As GM refined HEI and the aftermarket got on board it ... and show you how to get even more from it via a PerTronix ignition module, cap and integral ignition coil. We’re working with Ted ...

Today, there are several aftermarket high- performance modules and coils that can be added to a stock GM HEI distributor to give it excellent spark energy and rpm potential up to 7,000 rpm.The ...

We can hear the howling already. "Why do I want to put some junk GM ignition on my (insert AMC, Mopar, or Ford)?" The answer is: Don't—unless you like the idea of a higher-performance, more ...

When General Motors introduced the High Energy Ignition (HEI) distributor in the mid-1970s ... taken over by a reliable solid-state electronic module that can accept a full 12 volts of power.

Each distributor is custom tuned on a distributor ... Any four-pin '74-'90 GM HEI module will work in an emergency situation and is readily available at any auto parts store, just don't expect ...