The GM HEI distributor is still a marvel of simplicity and reliability after four decades. Here’s how to maximize its performance on the cheap.

The HEI distributor is an inductive-discharge-style ignition, but with the points replaced by a solid-state switching device called an electronic ignition-control module.

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Car Craft tales you through the steps of how to convert a Ford or Chrysler ingition to a GM HEI for a high-performance, more-efficient ignition.

The HEI’s integrated ignition coil in the distributor cap makes it the most compact ignition system in history. No external ignition coil to sweat out.