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Thread: did segment swap to 4l80e have a question

  1. #1
    Senior Member
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    Default did segment swap to 4l80e have a question

    ok i did the segment swap changed shift time to that of the 4l60e and change shift rpm. question is do i have to play with part throttle shifting or is there another way to get that stuff right?

  2. #2
    Joe (Moderator) joecar's Avatar
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    The gear ratios are different, so you have to make sure the PT shift tables are sane with regards to the RPM's;

    i.e. for each cell, what is the RPM that corresponds to that MPH;

    if you got the speedo entered correctly, the tunetool tells you the RPM for each MPH.

  3. #3
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    Ah ok I see it now it adjusts it for ya that's sweet. They look pretty close also changing the rear gears.

  4. #4
    Lifetime Member johnv's Avatar
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    You don't actually need to do a segment swap, you can run the 4l80e on a 4l60e program with some wiring changes.
    Back yard boost
    347+ T76 = 770 rwhp 10.96 @ 135 mph

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