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Thread: 3.29 Gear Swap

  1. #1

    3.29 Gear Swap

    So i went to the "Calculated Gear Ratio" and changed that to 3.69 and then hit commit but my car doesnt kickdown at the same MPH as before the tranny. Can someone post up your 3.29 WOT MPH table so i can compare to mine. Im trying to get my 3.29 tranny to act like my 2.93 tranny.Thanks
    Last edited by Lumpo; 06-18-2011 at 08:51 PM.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  2. #2
    Advanced Tuner
    Join Date
    Dec 2008
    Location
    Old Orchard Beach Maine
    Posts
    915
    umm.... its now geared differently so its going to kickdown at lower mph's unless you have also made valvetrain changes to rev much higher
    PB's 1/4 mi 12.21 117.75 trap ,1/8 mi. 7.779 93.99trap , 1.949 short time (FWD W body)

  3. #3
    I understand that im asking what you guys with 3.29 gears have your WOT shifts and kickdowns set at for best results...

    Anyone wanna post up your WOT shift speed table so i can compare to mine? Would you change anything about mine?

    Heres my "Shift Speed vs. Shift".




    Here is my "RPM vs Shift"



    My car is going to be down for a couple of days so i cant get out and figure it out for myself so just wondering what you guys have found to get the best results with the 3.29s. Thanks
    Last edited by Lumpo; 06-19-2011 at 06:25 PM.
    2003 Galaxy Silver Limited Edition GTP
    Mods: 2.8 MPS | S2IC | XP CAM | GEN V | 65# | E85 | TOGS | N* TB | HPT PRO | Impala Brakes | BUILT TRANS w/3.29 GRS

    2017 Chevrolet Silverado LTZ 6.2
    Mods: HPT PRO

  4. #4
    Senior Tuner Russ K's Avatar
    Join Date
    Dec 2005
    Location
    Regina, Sask.
    Posts
    4,214
    The shift points will be 12% lower with the 3.29 ratio. You could take a stock file and just enter the stock tire dia & 3.69 gears, make sure that the Auto Scale Trans Tables is yes and hit the commit button.

    Now you can fine tune the trans shift & TCC speeds.

    Russ Kemp

  5. #5
    Tuner in Training
    Join Date
    Dec 2008
    Location
    BC, canada
    Posts
    22
    here is my file that i run with my 3.29 gears. i like it.
    Last edited by REDNECKRACING; 08-05-2011 at 09:43 PM.