Trade 3.92 rear end for 3.55?

Trade 3.92 rear end for 3.55?

This is a discussion on Trade 3.92 rear end for 3.55? within the RAM 1500 Diesel Purchasing forums, part of the RAM 1500 EcoDiesel Forum category; I just bought a 2016 ED SLT Crew Cab 4x4 with less than 45,000 miles. It's in nearly pristine condition. I love it, but I ...

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Thread: Trade 3.92 rear end for 3.55?

  1. #1
    Jwm
    Jwm is offline
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    I just bought a 2016 ED SLT Crew Cab 4x4 with less than 45,000 miles. It's in nearly pristine condition. I love it, but I neglected to check the axle ratio before buying it. I never tow anything, and even though it's probably only a 1-2 mpg penalty at highway speeds, the fuel economy is one of the main reasons I bought it. Plus, it seems silly to have all the tow package bells and whistles and never use them.

    Anyone want to trade? I'm in SW Wisconsin. All I really care about is that it has less than 50k miles, is in REALLY nice shape, has the 3rd seat in the front row (that's a must), and is the short box. I have not (yet) installed the GDE engine and trans tunes, but plan to, so I'd be looking for the same in a trade.

    Interested parties can direct message me and I can send photos, etc.

  2. #2
    RAM Sr Member 3DHawkeye's Avatar
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    Ha ha! I saw the title and thought you just wanted to change rear ends and not the whole truck


  3. #3
    RAM Diamond Member Captainmal's Avatar
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    Welcome to the forum - first post.

    That would be a real PIA. Even if you did find someone that would do it, who will do it? You would have to meet, get the trucks side-by-side and then be able or get someone to make the swap. Bet it's not so easy.

    Then you will have to deal with the calibration of the speedometer. At least I think so if it is running off the transmission. I say, phooey!

    Said phooey before on many things the are just not worth the problems that can come up. First there never was any kind of "towing package", no matter the rear-end ratio. You truck is the same except for that ratio. It actually may be good in that at normal highway speeds you will not be lugging the engine below 1,500 rpm as often. It has been proposed that lower rpm operation causes engine trouble. OK - sou you get 27 mpg instead of 28 mpg.

    Be happy with what you have. It reads like a nice pickup that meets your expectations. Enjoy.
    If you wrestle with a pig you'll both get dirty and the pig loves it. .

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  5. #4
    RAM Sr Member leehunt19's Avatar
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    I think he wants to trade trucks.
    97hmcs likes this.

  6. #5
    RAM Diamond Member Captainmal's Avatar
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    Quote Originally Posted by leehunt19 View Post
    I think he wants to trade trucks.
    You are right. The title has one meaning but the 2nd paragraph make is clear. I messed up again. Chances of trading trucks is slim to none and slim just left the building.
    97hmcs likes this.
    If you wrestle with a pig you'll both get dirty and the pig loves it. .

  7. #6
    RAM Jr Member Bravo2's Avatar
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    Wouldn't it be easier to swap rear ends?

  8. #7
    RAM Silver Member Bounty Hunter's Avatar
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    Quote Originally Posted by Bravo2 View Post
    Wouldn't it be easier to swap rear ends?
    Not if that also includes front ends lol.
    Bravo2 likes this.
    2016 Laramie CC 6'4", Delmonico Red, GDE Hot tune and Trans tune, External oil cooler, PPE Trans pan

  9. #8
    RAM Jr Member Bravo2's Avatar
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    Quote Originally Posted by Bounty Hunter View Post
    Not if that also includes front ends lol.
    Ouch, didn't realize you'd need to swap the front diff too.

  10. #9
    RAM Sr Member DavidG's Avatar
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    Quote Originally Posted by Bravo2 View Post
    Ouch, didn't realize you'd need to swap the front diff too.
    Only if you ever want to put it in 4WD!

    Dave

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