Introduced more than three decades ago, GM's HEI ignition system has capably powered tens of thousands of vehicles over the years. The setup has remained popular with performance enthusiasts to this ...

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 ...

High performance is all about horsepower. But even the ultimate in heads, compression, cam, and the rest won’t make power if you can’t light the fire. Ignition systems don’t make horsepower, but a ...

Racers are famous for being able to break just about anything. And not surprisingly, we're no different from them. A perfect case in point is our dyno test mule engine. We recently used it to test ...