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Thread: 02 Vette A4 3.15 gear

  1. #1
    Advanced Tuner Pro Street's Avatar
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    Question 02 Vette A4 3.15 gear

    In the Editor-speedometer-final drive ratio-ratio it has 3.42 and my vette has 3.15 gears but everything seems ok.Do I need to change it to 3.15?
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert

  2. #2
    Senior Tuner Russ K's Avatar
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    I don't know why the A4 Corvettes are like this. A 2.73 gear car will also have 3.42 in the Final Drive Ratio box and 3.42 listed as the Current gear ratio. A 3.15 gear car will also list 3.42 as the Current gear ratio and as the Final Drive Ratio.

    If on a 3.15 gear car, if you set the new tire size as 26.00 and the new gear ratio to 3.15, then the current gear ratio changes to 3.15, the Rev-Trans value changes a very slight amount, the final drive ratio changes to 3.15 and the Trans Rev/Mile value changes by a very small amount.

    If your tire/gear ratio is stock, I would leave that table stock.

    Russ Kemp

  3. #3
    Advanced Tuner Pro Street's Avatar
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    Thanks Russ K
    I will leave it alone.
    2018 GMC Denali A8 6.2L
    2016 CTS-V
    2016 C7 Z06 A8
    2016 C7 Z06/Z07 A8 vert
    2015 Chevy SS 6.2 LS3 A6
    1996 Impala SS LT1 CAI
    1995 Chevy 1500 5.3 CAI Z06 cam
    1957 Chevy vert