Engines need spark plugs to burn their air/fuel mixture, and the spark plugs need a jolt of electricity to do their work. Older cars with conventional distributor-based ignition systems did it by ...

I recently acquired a 1968 Chevy truck with what is probably a replacement 350 motor. It had sat a long time and was in unknown condition. I thought it might run if it could get fuel and spark. I made ...

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 ...