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Thread: Swap - L8T 6.6 with 6L90 Trans

  1. 10-26-2023 #1
    Tony D
    Tony D is offline
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    Oct 2023
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    Swap - L8T 6.6 with 6L90 Trans

    I'm new here and would like some info from people with experience.
    I'm looking at purchasing a L8T with a 6L90 6 speed from a 2022 GMC Savana 3500 from a salvaged vehicle.
    Is it possible to have the ECM and TCM reprogramed to install the engine and trans in a 58 chevy pick up?
    Looking for info if its possible and is it worth it.
    Thank You

    Tony D
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  2. 10-26-2023 #2
    gtstorey
    gtstorey is offline
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    Nov 2017
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    Post in the GM v8 Gen 5 section.
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