An HEI Distributor Is One of Our Favorite Upgrades. Davis Unified Ignition or DUI is a leader in supplying drop-in HEI systems for many engines, including the AMC 304 in our 1974 CJ-5.

Q: Last month we described how to remove a first-generation (’74-’80) High Energy Ignition (HEI) distributor from your Corvette, disassemble it, test its indivi ...

Here's the drill. If you have an AMC, a Ford, or a Chrysler distributor with a magnetic pickup, it's really easy to convert to a standard four-pin GM HEI module.

Available from your nearest Proform distributor or mail-order supplier, Pontiac V-8 HEI (No. 66953) retails for $190. Proform/Specialty Auto Parts, Inc. P.O. Box 306Roseville, MI 48066(586) 774 ...