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 ...

If you've ever leaned over the fender of an old Chevy, timing light (one of the automotive diagnostic tools to add to your DIY collection) in one hand and a long extension on a ratchet wrench in the ...

Advancements in cylinder heads, camshaft profiles, and exhaust and intake systems have provided a path to move a higher volume of air and fuel through the engine, improving the internal combustion ...