There is only one way to find out for sure. Many Street Stock racing classes limit the ignition to stock-style replacement parts. For most Chevrolet and Ford engines, this means an HEI distributor is ...

There are several situations where a small- or big-block Chevy can use a locked-out distributor for ignition timing. Some race engine builders prefer a locked distributor because their engines do not ...

The GM HEI (High Energy Ignition) electronic distributors have a reputation for hassle-free performance. Used in GM rigs from its inception in 1974, the famed HEI can be retrofitted to almost any GM ...

It was time to tune up our 351 Mercury…again. The idle was rough and uneven, the power had dropped off, and the fuel economy had steadily gone from bad to worse. Frankly, we're tired of that routine.

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 ...