3.21

  1. P

    2013 Ram 1500 Front gear swap

    I have a 2013 Ram 1500 with 3.21 gear ratio. I pull a boat every weekend and want to add a 4" lift kit and 35's. I know I need to change the gearing to keep the truck from being a dog once the lift and tires are installed. I was wondering if anyone has any experience with the front gear kit from...
  2. G

    RCSB 6speed 3.55 VS RCSB 8speed 3.21

    Hey Guys! New to the forum. Scoured through the posts but couldn’t find the answer I was looking for. I’m looking at a few different rams right now. But 2 in particular. I’m a current new business owner and right now have to many vehicles and want to consolidate into a truck that can do...
  3. P

    2022 Ram Classic 1500 shopping

    Hello collective wisdom of all things Ram, So I'm shopping two different dealers and trucks. One has a basic 1500 classic 4x4, 3.6L, coming next week, it has the 17 inch rims and tires and 3.21 rear. The other dealer has the same truck with a few more options with 3.55 rear and 20 inch rims and...
  4. Ryanf2424

    Re-gearing needed?

    Planning on getting a 2022 Ram 1500 5.7 Hemi with a 3.21 gear ratio, will I have to/ should I have it re-geared for 35" tires? Will have a 6" lift as well.
  5. ErnieD

    2019 Ram 1500 Classic; 5.7 Hemi; 3.21 gears, 6900# GVWR Towing Question

    Ok, I need some real world results. Please don’t post specs as I’ve researched the numbers over and over on what the RAM engineers have stated this trucks ratings are. Also I am a master certified truck tech, so I don’t need a lesson in horsepower or gear ratios. Below is my question : Specific...
  6. W

    My daily mall crawler on 3.21's...

    I read about 3.21's all the time but as a mall crawler what is the biggest tire size I can push? Not too worried about power or gas mileage. Just what a Ram 1500 with 3.21 gears can manage. Just be straight.
  7. W

    Gearing questions.

    Hey everyone. Been doing research for a while and just had a "small" thought. I decided that eventually I'm going to try and re gear over the course of this summer. I've found out that in the models above 2011 it is that the largest gear you can fit in the front differential is 4.56. I've been...
  8. W

    37's and 3.21. Here I go again...

    Hey everyone. I've finally decided I want to do a six inch lift with 37's on my 2015 Ram 1500. I see posts that say it is an absolute dog and those few rare posts that say 3.21 with 37's don't seem to be an issue whatsoever. I feel like I am way too stuck on 37's and how nice they look. But I...
  9. AJAY

    2013 5.7 a big hog

    So last month the wife and I traded in our 2016 Ford Fusion 2.0 Ecoboost for a new 2018 Ram 1500 quad cab 4x4 with 3.21 rear end and 5.7 Hemi. The price was too good to pass up! We put 275/65r20 toyos which is about 34' one two weeks ago and have yet to calibrate the speedo and no mods. We have...
  10. W

    2015 Ram 1500 3.21 gearing and 35's.

    Hey everyone so I have posted about this before but I am still a little confused. I have decided that I would like to do a six inch lift for my truck. I love the look of 35's. But what I am lost at is that my current tires are about 33 inches. On 3.21 gearing how would 35's do that much damage...
  11. W

    4/6 inch lift and 35's or 37's with 3.21 gearing help.

    Hi everyone. I found this forum site gives the most feedback to the people who are posting so I thought I'd start here. I recently bought a 2015 ram 1500 Express 3.6L with the 3.21 gearing used with 50k miles. Even though a hemi would've been great it was never an option for me due to a...
  12. M

    Increase towing capcity in Ram 1500 V6

    I made a rookie truck buyers mistake and let the dealer tell me my 2016 Dodge Ram 1500 had a towing capacity over 7000 pounds. I purchased a 2016 Ram 1500 4x4 with the V6, but the problem is that it has the 3.21 axle ratio so it's rated at 4170 pounds, not the 3.55 which is rated at 7160...
  13. tsingletary

    Towing with 3.21 and 35's

    Just got a new 2017 ram and looking to add a lift in tires but can't decide what to do based on towing performance. I'm looking at a 3 inch suspension lift with 33's but I would really like a 4 or 6 inch lift with 35's. My problem is, I have 3.21 gears and don't know how much my towing...
  14. JoeDirtHemi

    2018 Laramie 1500 4X4 5.7L - To switch gears, or not to switch gears?

    Hey y'all, Just got me a Hemi, whhhhhheeeeeewwwwwwwwwwwwwwwwwwww!!! But, it has the factory 3.21 in it. I want the 3.92. Just like every other post about this topic, I know there are a lot of threads that exist, and I am perpetuating the problem. There are so many threads here that exist, its...
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