wagoneer Posted August 21 Report Share Posted August 21 (edited) Hello, I am looking for a new distributor for my Chrysler with 25" block, and I've come up with an interesting theory that I would like your experienced input. I would like to posit that a Jeep willy's IAT-4012 (some used IAY-4012) distributor (see this NOS one) could be converted for use in my 1948 Chrysler 25" block if I replace the cam & stop plate + cap + rotor with one from a spare IGS distributor. Many sites say the Jeeps used IAT-4012 in certain models too, which got me thinking about reusing it my Chrysler 6 flathead. Advantages: - Tons of quality parts for jeep distributors including rebuild parts and NOS parts makes this easy to maintain moving forward. - works at 6v Disadvantages: Need to cannibalize one older distributor. The 1952 Autolite catalog lists IGS-4208A-1 for my 1948 C38, but lists the IAT-4012 for the 1951-52 C51. Q1) Are the IGS-4208A-1 and IAT-4012 inter-changeable? I am positing that they are interchangeable as the straight 6 was so near to the end. The Jeep Willy's / Kaiser uses IAY-4012 and several places online say you can interchange IAT and IAD versions, and the shaft looks very similar to the Chrysler/Dodge flathead shaft found in the Chrysler 6. Q2) Is the shaft of the IAY-4012 the same length as the Chrysler shaft? Is it the same "keyed" shaft? I could swap the shaft out too. I can't find any information on how long the This thread shows the it to be 5 1/2 inches. Edited August 21 by wagoneer Quote Link to comment Share on other sites More sharing options...
Doug&Deb Posted August 21 Report Share Posted August 21 The only thing I would be concerned about is that you have the semi auto trans and I believe that dictates what distributor you can use. I may be wrong though. Quote Link to comment Share on other sites More sharing options...
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