The ignition module uses this information to determine when to fire the ignition coil. The HEI distributor is an inductive-discharge-style ignition, but with the points replaced by a solid-state ...

At some point in the mid 1970s or so, GM (with Delco Remy) came up with a new electronic ignition system known as HEI or High Energy ... coil and control module. Installation is simple, and ...

While you could use a Duraspark box, they are much larger than an HEI module. Or if you have a Jeep or a Mopar engine running a ballast resistor ignition, you're giving up ignition power that ...

PD (Performance Distributors) reworked the HEI with their 50,000-volt D.U.I. coil and Dyna-Mod module, so voltage doesn't drop off until around 7,500 rpm for their street/strip coil, and 9,000 rpm ...