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Thread: Why Would G56 Tranny Mount Bolts Keep Breaking?

  1. Top Of Page | #1

    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Bolts were broke a couple months ago when I did new clutch...doing 2nd gen swap today and dropped cross member to get down pipe out and they were broke again...this is dumb...it's just deleted with DRD tunes...not even that beasty yet.

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  3. Top Of Page | #2
    #1 VENDOR cumminsdieselfreak's Avatar

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    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by captaincaveman View Post
    Bolts were broke a couple months ago when I did new clutch...doing 2nd gen swap today and dropped cross member to get down pipe out and they were broke again...this is dumb...it's just deleted with DRD tunes...not even that beasty yet.
    What kind of shape are your motor mounts in?

    2018 Ram 2500 4x4 G56
    Romans 10:13

    See what we are up to on:
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    Or Email me at:
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  5. Top Of Page | #3

    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by cumminsdieselfreak View Post
    What kind of shape are your motor mounts in?
    dunno...it's dark now...I'll check tomorrow


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    #1 VENDOR cumminsdieselfreak's Avatar

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    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by captaincaveman View Post
    dunno...it's dark now...I'll check tomorrow
    Let us know what you find. Driveshaft could be out of balance as well. What is the year/mileage of truck?

    2018 Ram 2500 4x4 G56
    Romans 10:13

    See what we are up to on:
    FACEBOOK | INSTAGRAM
    Or Email me at:
    joe@ddpmotorsports.com
    www.ddpmotorsports.com


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  9. Top Of Page | #5

    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by cumminsdieselfreak View Post
    Let us know what you find. Driveshaft could be out of balance as well. What is the year/mileage of truck?
    2009...almost 200k


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  11. Top Of Page | #6

    Why Would G56 Tranny Mount Bolts Keep Breaking?

    UPDATE:

    New OEM motor mounts with Prothane inserts, and tranny mount bolts are broke again.

    Any more ideas?


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  13. Top Of Page | #7
    Muzzy's Avatar

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    Why Would G56 Tranny Mount Bolts Keep Breaking?

    There has to be some significant driveline shift to cause the bolts to break.

    I have a G56 with a Southbend clutch and have never had an issue with bolts breaking.

    I am running a pretty aggressive tune.

    Other things that come to mind that may cause it is wheel hop if you are launching hard.

    Dumping the clutch at too high of any RPM/Load.

    -Muzzy

    2008 Megacab 4x4 G56 Trans - All mods lost in boating accident - EFI Live by Muzzy, 2nd gen S467.7/83/1.0, Banks Monster Ram, 5" Exhaust, Grid Heater Delete, Rail Plug, BD Flowmax LP, SB Clutch, Fuel Sump -8AN line, Bilstein 5100s, Cali Track Bar, Dynatec B-joints, Level Springs, 1" Lift Shackles Rear, Royal Purple Lubricants...there is probably more that I forgot.

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  15. Top Of Page | #8

    Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by Muzzy View Post
    There has to be some significant driveline shift to cause the bolts to break.

    I have a G56 with a Southbend clutch and have never had an issue with bolts breaking.

    I am running a pretty aggressive tune.

    Other things that come to mind that may cause it is wheel hop if you are launching hard.

    Dumping the clutch at too high of any RPM/Load.

    -Muzzy
    Tuned, deleted, Valair DD ceramic clutch, 2nd gen 467.7 turbo....Not making crazy power and I don't beat on it....mostly highway driving.


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  17. Top Of Page | #9
    frybrainwill's Avatar

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    Re: Why Would G56 Tranny Mount Bolts Keep Breaking?

    I had the same issue with my 4th Gen.

    I ended up drilling the bolt holes all the way through and using grade 8 hardware have not had a problem since.

    2015 Ram 2500 4x4 Laramie Mega Cab
    6.7 Cummins , G56 Swap, Carli suspension 3.5", Carli Lifetime Ball Joints, 55W HID low beam LED High Beam, 37x12.50R17 Toyo Open Country, Black Rhino Abrams Wheels, Truck cap

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  19. Top Of Page | #10

    Re: Why Would G56 Tranny Mount Bolts Keep Breaking?

    Quote Originally Posted by frybrainwill View Post
    I had the same issue with my 4th Gen.

    I ended up drilling the bolt holes all the way through and using grade 8 hardware have not had a problem since.
    Like all the way through with a nut and lock washer on the back side?

    What size?


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