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Swapping 2012 MT-82 to 2017 MT-82

Discussion in '2011-2014 Mustang Talk' started by gar3awe, Jun 29, 2017.

  1. gar3awe

    gar3awe Member Established Member

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    I got the 2012 model, found a good deal on a used mt-82 coming out of a 2017. Would it fit the 2012?


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  2. robrbn

    robrbn Active Member Established Member

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    I believe the flange for the driveshaft changed from 4-bolt to 3-bolt if I remember correctly - someone else can chime in. But that would just require you to swap out your flange.
     
  3. Carbd86GT

    Carbd86GT You're Gator Bait Established Member

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    Remove S550 3 bolt flange from trans, install the S197 4 bolt flange on the S500 trans and boom. The only difference between S197 and S550 MT82's is the flange and shifter assembly.
     
  4. Stellerjd

    Stellerjd New Member Established Member

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    I wonder why Ford decided to do a 3-bolt on the S550 instead of keeping it a 4-bolt?? This baffled me when I first heard of the change.
     
  5. paulyboy928

    paulyboy928 Active Member Established Member

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    my guess would be price
     
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  6. L8APEX

    L8APEX On my tummy..! Established Member

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    3 is a better design for distribution of forces. Think of a 4 legged chair on an uneven floor. Now take a 3 legged chair and sit in it... it won't rock at all. Sure the load potentially goes up 33% per bolt but when stresses are put through it, it will divide it evenly between the 3.

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  7. hand-filer

    hand-filer Active Member Established Member

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    Yes for balance but this about shear strength. 4 is better than 3.
    [​IMG]


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  8. L8APEX

    L8APEX On my tummy..! Established Member

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    Of course 4 will be inheritly stronger in a brute sense.
    The more I think about it I have a feeling it was an engineering and bean counter appeasement move. Better balance as the new coyotes and voodoo spin even faster. And it might be a NVH move too to clean up some of the drivetrain thunks. The bean counters get to keep a 20 cent Bolt so they are happy. Does the GT-350 use the same 3 Bolt setup as a GT in the S550s. Then are the bolts from the 4 lug S197 the same as the ones in the S550 or might the new ones be different, especially larger ?

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