The Super HEI Kit-which is a smog-legal modification, by the way-allows you to retain an already installed HEI distributor. Depending on the type of module you're running (four-, five-, or seven ...

The ignition module in an HEI is also easily upgradeable for horsepower gains. Think of it as the ignition's brain.

So, if you burn a coil, chip the rotor, or create any other damage, consider rebuilding your own HEI distributor. Mallory's high-power module and coil are also compatible with stock distributors ...

We analyze 10 common myths regarding HEI (High Energy Ignitions) distributor system including ones regarding internal coils, billet housings, performance gains, vacuum advance, and plug wires ...