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Ram 2500 swap rear gears only

Discussion in 'Heavy Duty' started by Clark Kent, May 18, 2020.

  1. Clark Kent

    Clark Kent Junior Member

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    I'm in the middle of changing my 2018 6.4 Hemi 2500's gears from 3.73's to 4.56's. I'm thinking I can finish up the rear, drive the truck until the weekend and then tackle the front. That's if I don't use four wheel drive.

    In park, the front driveshaft turns freely by hand and the front axle has a disconnect. I can see that the driveshaft is basically uncoupled from the transmission. Therefore, I don't see the harm in driving this thing in 2wd until I swap the front gears.

    Am I missing something or does this seem feasible? Change the rear gears this week, reprogram the truck, drive some, and then swap the front gears the following week.

    BTW, the True-Track style rear LSD in this AAM 11.5 is one heavy carrier.
     
  2. G. Mcpherson

    G. Mcpherson Senior Member

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    You should be good to go.
     
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  3. 62Blazer

    62Blazer Senior Member

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    Absolutely no reason you couldn't do this. In an emergency you could even use 4wd, such as if you were stuck in a mud hole you could shift into 4wd to get out of it. Just don't put it in 4wd and go hot tracking down the road.
     
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  4. 2003F350

    2003F350 Senior Member

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    This right here. Don't drive in 4wd anywhere you'll have a decent amount of traction and you'll be fine.
     
  5. U&A

    U&A Senior Member

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    Or leave the fronts alone so you get more wheel spin up there when in the mud to keep your truck afloat longer

    Jk


    Sent while firmly grasping my redline lubed RAM
     
  6. MADDOG

    MADDOG Cummins Driver Administrator Supporting Member Military

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    Yeah, you're good to go. Just don't engage 4WD and you'll be fine.
     
  7. Bldrinker

    Bldrinker Senior Member

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    Let us know how you like the power after the swap.
    I just put 285/75/18’s on my 6.4. Depending on how it goes towing the trailer in 2 weeks I may re gear.
    Currently have 4:10’s
     
  8. Clark Kent

    Clark Kent Junior Member

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    Thanks, figured there wouldn't be an issue.

    I'll report back after the swap. I honestly didn't notice any significant difference in power with the 35's from my day to day driving. However, they only went on about a month ago and I've done very little driving with this whole Covid thing. Maybe 500 miles or so.

    As for towing, I have a car trailer and jeep I haul around often so I wanted to regear. I haven't towed that jeep since the tire change as the local offroad parks were closed. I've only towed my small aluminum 16' bass boat. With the boat I had a little bit of gear hunting with inclines at highway speed that I never noticed prior to the tire change. I think if I already had the 4.10's, I probably wouldn't be swapping gears for my use. But again, I haven't towed my jeep yet.
     

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