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1990 E34 M20B25 to M50B25 swap questions

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    1990 E34 M20B25 to M50B25 swap questions

    I have a 90 E34 M20B25 525i Getrag and a 1992 E34 m50b25 525iT with an auto trans. I'd like to swap in the M50 into the 90 E34. I know that the wiring harness needs to be swapped but wasn't sure about the transmissions.

    Will a M50B25 auto work with a Getrag 260/5 in the e34 without modifications or will I have to piece together a drive shaft, etc? I heard that the engine is clocked differently but this isn't 100%.

    It seems that the Getrag sits further into the engine bay than the auto, how would the engine mounts work with this setup?

    The 525iT was free with a bad transmission and self leveling shocks, the 525i was $400. I have all the time in the world, just not cash.

    Thanks!

    #2
    Dont. Know where to start... go read the wiki at the rope of the page, it will answer all your questions

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