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 ...

Sometime around 1975, General Motors made a significant advancement in ignition technology: the High Energy Ignition (HEI to you and me). Its best feature was simplicity. The coil was contained within ...

Replacement aftermarket distributors run the price gamut from the ultra cheap with questionable quality, to high end and pricey for guys making big power. But if you're on a budget, there is another ...

This video walks through an HEI distributor diagnosis and repair with a step-by-step fix, showing how to identify the problem and get your ignition system running strong again. With real driving ...

My 1978 Corvette is cutting out under acceleration. I took the car to the dealership, and they told me the distributor was defective and would need to be replaced. I would like to keep as many ...