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2009-2014 Cadillac CTS-V General Discussion Discussion, On the fence again on what transmission in Cadillac CTS-V Series Forum - 2009-2014; Originally Posted by Silverspeed FYI for first gear, running 3.73's in the A6 gives a overall ratio of 14.99. To ...
  1. #46
    Kidhummer's Avatar
    Kidhummer is offline Cadillac Owners Fanatic
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    Re: On the fence again on what transmission

    Quote Originally Posted by Silverspeed View Post
    FYI for first gear, running 3.73's in the A6 gives a overall ratio of 14.99. To have the same overall ratio in the MN6 you would need a 5.64 gear set. lol

    Factory stock the A6 car is already has stronger overall gearing in the first three gears than the MN6, especially in first and second, with the MN6 surpassing it in fourth. I would venture to say from a dig the A6 car will pull away from the MN6 only to get caught later in the run if driven properly. From a highway roll at 80+ the MN6 should walk the A6 since the very slight gearing advantage in 3rd won't overcome it's rwhp disadvantage.

    Bench racing at it's best.

    Overall gear ratios by trans type:

    A6 with 3.23..............MN6 with 3.73.......A6 with 3.73............MN6 with 4.10

    1: 12.98...................1. 9.92................1. 14.99..................1. 10.91
    2: 7.62....................2. 6.64................2. 8.80....................2. 7.30
    3: 4.94....................3. 4.85................3. 5.71....................3. 5.33
    4: 3.71....................4. 3.73................4. 4.29....................4. 4.10
    Lets get the MPH now

  2. #47
    Silverspeed is offline Cadillac Owners Member
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    Re: On the fence again on what transmission

    Quote Originally Posted by Kidhummer View Post
    Lets get the MPH now
    What's the OD of the tire?

  3. #48
    NormV is offline Cadillac Owners Connoisseur
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    Re: On the fence again on what transmission

    Another variable, one we don't know and might not be able to compute, is what torque specs are. I am betting with the engine torque and car weight the torque converter will be on the tight side. A tighter 'verter will lower heat and might be able to get away with towing.


    Norm

  4. #49
    v84life's Avatar
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    Re: On the fence again on what transmission

    Another small variable is the weight difference of 100lbs...

  5. #50
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    Re: On the fence again on what transmission

    Towing

  6. #51
    Silverspeed is offline Cadillac Owners Member
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    Re: On the fence again on what transmission

    Quote Originally Posted by Kidhummer View Post
    Lets get the MPH now
    Here they are. If Iknew the exact OD of the tire I could get them exact, but I plugged this into a calculator using the tire size of 285/35/19. Different manufacturer's have different OD's with the same size tire. Guess I could have looked on tire rack, but this is close enough. In MPH...

    A6/3.23...........MN6/3.73.............A6/3.73..........MN6/4.10

    1. 38...............1. 50...................1. 33...............1. 45
    2. 65...............2. 75...................2. 56...............2. 68
    3. 100.............3. 102.................3. 87...............3. 93
    4. 133.............4. 133.................4. 115.............4. 121

  7. #52
    NormV is offline Cadillac Owners Connoisseur
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    Re: On the fence again on what transmission

    Quote Originally Posted by v84life View Post
    Towing
    Uh huh!

    http://www.cadillacforums.com/forums...l-trailer.html

    Norm

  8. #53
    Kidhummer's Avatar
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    Re: On the fence again on what transmission

    Quote Originally Posted by Silverspeed View Post
    Here they are. If Iknew the exact OD of the tire I could get them exact, but I plugged this into a calculator using the tire size of 285/35/19. Different manufacturer's have different OD's with the same size tire. Guess I could have looked on tire rack, but this is close enough. In MPH...

    A6/3.23...........MN6/3.73.............A6/3.73..........MN6/4.10

    1. 38...............1. 50...................1. 33...............1. 45
    2. 65...............2. 75...................2. 56...............2. 68
    3. 100.............3. 102.................3. 87...............3. 93
    4. 133.............4. 133.................4. 115.............4. 121
    interesting #'s

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