5thGenRams Forums

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

  • We have been battling an on and off issue with registration verification emails not being sent out with certain users. We have finally got the issue resolved so if you have tried registering for the site but have not received a verification email, just request another verification email when you log in and you should now receive it. If you still don't receive the verification email, send us an email at [email protected] and we will get it resolved for you. Thanks!

3.21

  1. C

    3.21 to 3.92 conversion

    I have a 2019 Ram 1500, 5.7L with 3.21 rear gears. I want to swap the gears to 3.92s. Does anyone know what other modifications would be required, if any? Computer reprogramming? Trans cooler? What exactly are the differences from factory other than the gears?
  2. T

    Aftermarket Gear Swap

    I purchased a 2020 Ram 1500 about 6 months ago and want to do a gear swap. Ive searched high and low and cant seem to find any aftermarket ring and pinion sets for the swap. I have a 3.21 and looking for a 4.10. It is a 2wd so the front end isnt an issue here. Anybody know where I can find them...
  3. J

    An Engineer's Ultimate Guide To 3.21 VS 3.92 Axle Ratio

    I hope this post will help to end the debate with facts and not opinions, and become THE post people refer to those who are having a hard time deciding. You already know that 3.92 is better for towing, and 3.21 gets better fuel economy, so I will talk about what you might not know Bottom line...
  4. Nedbeir

    New 5th gen 1500

    Just picked up my 2019 all new billet silver 5th Gen, Bighorn / Lonestar Crew, 5.7, 3.21 gears, 25Z package, LED’s, (9) Alpine speakers and remote start two days ago. After 500 miles I’m so impressed with this rig. It’s ride, it’s power, it’s stereo and it’s great looks! I wasn’t impressed with...
  5. G

    Switching from 3.92 to 3.21...

    How realistic / costly is it to switch a truck that comes with the 3.92 gear ratio back to a 3.21? I’ve found several trucks that I like that have the 3.92 instead of 3.21, but I do not need the 3.92 as I do not do a lot of towing. I realize this may be a really stupid question.
Top