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Thread: Shift Points

  1. #1
    Tuner in Training
    Join Date
    May 2020
    Posts
    12

    Shift Points

    I am a new Tuner here.
    I have a built Twin Turbo 5.7 with the Nag1 5 speed.

    I would like to raise my shift points to 6750.

    Engine:
    I see Cutoff - Drive and maximum limits.
    Trans:
    - TCM RPM Limit.

    Are these the correct and only parameters to adjust?

  2. #2
    Senior Tuner
    Join Date
    May 2016
    Posts
    1,134
    There are also WOT shift schedule tables that are in output shaft speed for the RPM at which to start the shift. Start low and log then raise as needed instead of setting all to the OSS that corresponds to 6750 engine speed because it will rev higher than when shift is commanded, especially in lower gears.