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Thread: gear ratio need help

  1. #1
    Tuner in Training
    Join Date
    Jan 2012
    Posts
    36

    gear ratio need help

    i have a 4665e trans out of a 2003 grand prix gt i looked it up and gear ratio is a 3.29 i looked at my tune and it is entered as a 3.69 gear raio is there something i am missing shouldnt it be entered as a 3.29 ratio my tire heigth is right
    please help i want to be sure i have right one entered
    thanks

  2. #2
    Senior Tuner Russ K's Avatar
    Join Date
    Dec 2005
    Location
    Regina, Sask.
    Posts
    4,214
    That would be correct if the trans & tune were from a GTP with the 1.121 sprocket ratio. If its a GT, then the sprocket ratio should be 1.00 and the gear ratio 3.29.

    Russ Kemp