AURktman Posted April 17, 2019 Report Posted April 17, 2019 (edited) I am trying to ID this transmission. It came with a car a colleague purchased and was told it was not an overdrive unit. The car originally came with an overdrive and he wants to put one back in but need to ID this transmission first. It came with a 1938 Desoto S5 Deluxe. Thanks for any information! Edited April 17, 2019 by AURktman Spelling Quote
desoto1939 Posted April 18, 2019 Report Posted April 18, 2019 This is rich Hartung with a 39 Desoto. I looked inmy 1936-42 Dsoto MAster Parts manual and I can not find the number that you have on the trans case. The number that I can find is 631840 and this is for the standard transmission case the overdrive case is number 670919 and these were used on 1938 and 1939 Desoto. I have a lot of cross reference catalogs about the early Desoto soplese contact me I live near Philadelphia PA Desoto1939@aol.com Quote
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