If there is a standard in the world for a stand-alone electronic ignition distributor for GM engines, it has to be the High Energy Ignition or HEI distributor. This large cap distributor first ...

Performance Distributors developed these 383/440 distributors to clear stock valve covers and fit under low production hoods like our '67 Coronet's. We tried a set of the Mopar Performance finned ...

It wasn't all that long ago that GM engineers designed the original HEI system to replace the decades old points-type ignitions. In the mid-'70s, leaner mixtures demanded greater voltage and more ...

Let’s start by looking at the evolution of the GM High Energy Ignition (HEI) system. This system became available as an option in 1974 and was standard in all 1975-and-later vehicles, with the ...