Join Date: Sep 1999
Location: Vancouver, WA, near Portland, OR
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Re: GM HEI in a \'72 304?
All AMC V-8's should be the same internally to accept whatever distributor you want to drop in as long as it was for an AMC. Now with this in mind, points distributors are only accurate when first set. They wear and lose efficiency from then on. Then AMC used Prestolite distributors. They were an improvement over points, but not much. I had a Prestolite on my '76 Waggie w/AMC 401. A poor design of a distributor. Then in '78 AMC switched to Motorcraft Duraspark distributors. Big leap in performance. One step further would be the TR upgrade mentioned on this board so much. Yes you could get a HEI clone for your 304 from Performance Distributors, (DUI), but it's really not as reliable as a true GM HEI. Get the Ford Durospark distributor from a '78 or newer AMC V-8 and do the TR upgrade. There are a few that have done this to their AMC V-8 powered Commandos with good success.