When General Motors introduced the High Energy Ignition (HEI) distributor in the mid-1970s, it was revolutionary. So much so that it still has a strong following among today's hot rodders. Like other ...

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 ...

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 ...

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 ...

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 ...