Read the tech article on HEI Coils And Modules, brought to you by the experts at Chevy High Performance Magazine.

As GM refined HEI and the aftermarket got on board it only got better to where it became an industry standard. It became the best factory ignition system of its time.

Here's the drill. If you have an AMC, a Ford, or a Chrysler distributor with a magnetic pickup, it's really easy to convert to a standard four-pin GM HEI module.