SUBARU3 Posted December 20, 2005 Share Posted December 20, 2005 Apparently, they used 3 different types of automatic transmissions in the Gen 1s Aisin Warner M41 Aisin Warner M41A Jatco L3N71B I thought they were all the same. Anybody have an idea on this? Thanks, Todd Link to comment Share on other sites More sharing options...
NorthWet Posted December 20, 2005 Share Posted December 20, 2005 Ummm... what kind of idea do you want? Not that I am likely to provide you with much info, but you never know. Link to comment Share on other sites More sharing options...
SUBARU3 Posted December 20, 2005 Author Share Posted December 20, 2005 If they did indeed use 3? If these were it? Was one particular one the main one used? How can I tell which one I have? Are the 2 with the same name basically the same? Link to comment Share on other sites More sharing options...
tailgatewagon Posted December 21, 2005 Share Posted December 21, 2005 what year are you talking. or year range. i can lookin my factory parts books and see the application. i have 68-79 parts books so i should have it covered.... Link to comment Share on other sites More sharing options...
tailgatewagon Posted December 21, 2005 Share Posted December 21, 2005 Trans Part number 340258710 this is for the trany case...without the front diff... covers years. 1977(stage1) and 1977(stage2), 1978 HT, 2d,4d sw(DL) 340253600 1975 HT GF, Coupe GL, 2dr DL, 4dr DL, SW DL, no auto trany listed in my book for 1972, 1973(stage1) 1973(stage2) 1973(stage3) 1974 all the pix of auto tranys i could find for 75-79 they all looked the same. some part numbers were differnt. and may just be superceded. anyway i hope this helps. Link to comment Share on other sites More sharing options...
SUBARU3 Posted December 21, 2005 Author Share Posted December 21, 2005 Thanks for looking and your time. I'm mainly interested in 77-79. I can't seem to cross the actual trans manufacturer with the year/Part #. Todd Link to comment Share on other sites More sharing options...
GLCraig Posted December 21, 2005 Share Posted December 21, 2005 Well if this helps, the only Gen1 auto I ever scrapped out was from a 78. Execpt for the bellhousing, I could not tell a difference between it and a Gen2 2wd Auto. Link to comment Share on other sites More sharing options...
NorthWet Posted December 21, 2005 Share Posted December 21, 2005 If I were a betting man (I am not ), I would say that if you had one it would probably be the JATCO unit, as it was used in the later cars. The M41 and M41A are probably near-twins (with each other); some relatively minor refinement. (BTW, the JATCO core was used in several other Japanese cars.) Parts stores have asked me which 3AT I was buying a pan gasket for, as they are different shapes. This may be your best external distinguishing characteristic. If you take the pan off, the valve body should be marked with transmission ID. Link to comment Share on other sites More sharing options...
SUBARU3 Posted December 21, 2005 Author Share Posted December 21, 2005 Thanks for all the info! It looks to be the Jatco. Todd Link to comment Share on other sites More sharing options...
moosens Posted December 21, 2005 Share Posted December 21, 2005 I'm pretty sure the M series was from '74 - '77 stage I.It's shown in the '74 Auto Trans SM Hope that helps. If that tranny was the "A" then I'm guessing the M41 was the Japanese version.That looks like any stage I auto that I can recall,doesn't it? Link to comment Share on other sites More sharing options...
SUBARU3 Posted December 21, 2005 Author Share Posted December 21, 2005 Hmm....that looks like mine! Thanks Paul!! Link to comment Share on other sites More sharing options...
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