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Thread: 6l90e in a 6l80e car

  1. #1
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    Default 6l90e in a 6l80e car

    Will a 6l90e work in a car that has a 6l80e in it already with a e38 ECM

  2. #2
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    Quote Originally Posted by b18cls1 View Post
    Will a 6l90e work in a car that has a 6l80e in it already with a e38 ECM
    Sure.

  3. #3
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    Just bolt it in an flash the 80e os into it?

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    Quote Originally Posted by b18cls1 View Post
    Just bolt it in an flash the 80e os into it?
    Well apart from the engine/convertor side, not quite a bolt in as the case is a little over an inch longer and depending on which chassis the 6L80E is in, the extension housing/output stage may be different in length too. OS's are generally the same from year to year with exceptions across different platforms.

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    It's in a g8. I can have the driveshaft shortened and make a trans crossmember if need , that stuff I'm not worried about the electrical part is what I'm wondering about. Will the harness plug into the 90 ect.

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    Quote Originally Posted by b18cls1 View Post
    It's in a g8. I can have the driveshaft shortened and make a trans crossmember if need , that stuff I'm not worried about the electrical part is what I'm wondering about. Will the harness plug into the 90 ect.
    Yes it will plug right in. Connector is the same.

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    Good cause 12k miles and my 80 is trashedi hope the 90 can take some more abuse

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    Quote Originally Posted by b18cls1 View Post
    Good cause 12k miles and my 80 is trashedi hope the 90 can take some more abuse
    What is trashed in the 6L80. We hear of mainly failures in the 4-5-6 area. :(

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    Was the TCM calibration edited...?

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