Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum > 4.10s or 4.56s gears?

Join Wrangler Forum Today


Thread: 4.10s or 4.56s gears? Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
04-04-2013 12:03 AM
scuba_steve
Quote:
Originally Posted by DJL2 View Post
It depends on how much you value performance - I have stock 4.10 gears and 32 inch tires. Most of the time, my Jeep struggles to get out of its own way if the tach has anything less than 2500 rpm on it. I understand that's partly the engine (I've a 3.6...god bless those with the 3.8) and partly the vehicle weight, but good lord is it annoying at times.

I understand it's a compromise and that it means I need to row a few more gears to keep the engine where it needs to be. Will you notice a big difference going from 3.21 to 4.10 - yes, I should think so. You really don't need more for 33s unless you want it or figure you'll go bigger.

I have pretty much the same setup (3.6L, 32" tires, 4.10 gearing) with the 5 speed auto...and I think my JKR hauls ass. There is no comparison to the TJ it replaced...or the YJ before that. I feel like I am in a muscle car now. Of course, I don't mind stepping on the gas. I guess how you feel about the performance is probably influenced to some extent by what you were driving previously.
04-03-2013 09:41 PM
MTH
Quote:
Originally Posted by Grim_Fandango23 View Post
I have a 13 jk automatic and I want to go up to 33" duratracs. I have the 3.21s and I was wanting some opinions on whether to go with 4.10s or 4.56 for a regear.

Thanks
Don't bother. 3.21s handle 33s just fine.
04-03-2013 09:39 PM
Grim_Fandango23
Quote:
Originally Posted by bo9roadking View Post
If you decide to do an axle swap, it is easier to swap axles than to install gears. I have a set of Rubicon axles off my 2012 if you are interested.

Thanks for the offer, but I think I'll wait and break what I have first before I upgrade the front axle to a Dana 44.
04-03-2013 08:15 AM
bo9roadking
Quote:
Originally Posted by Grim_Fandango23 View Post
I have a 13 jk automatic and I want to go up to 33" duratracs. I have the 3.21s and I was wanting some opinions on whether to go with 4.10s or 4.56 for a regear.


Thanks
The Rubicon comes with 4.10 gears and 32" tires. I don't see any reason to go 4.56 unless you plan on going with bigger tires in the future. I'm running 4.56 gears with 37" tires.

I don't know what your local shop wants to charge you for doing gears, but if your JK doesn't have lockers or a D44 up front, you might look into getting takeoff axles from a Rubicon that already has lockers and 4.10 gears in them. It will be a bit more than the cost to do gears, but if you have a D30 front axle now, the D44 will have stronger ring and pinion gears in it.

If you decide to do an axle swap, it is easier to swap axles than to install gears. I have a set of Rubicon axles off my 2012 if you are interested.
04-02-2013 09:27 PM
Grim_Fandango23
Quote:
Originally Posted by river2c View Post
A regear is usually not needed until you step up to 35" tires. I'd drive it for a while and see how it does stock.

Yeah I wouldn't be regearing anytime soon. I'll probably wait off while until the stock tires wear out before making any decisions.
04-02-2013 09:21 PM
GoldenSahara00 I honestly don't think you need to regear. 4.56 is way over kill.
04-02-2013 09:19 PM
river2c A regear is usually not needed until you step up to 35" tires. I'd drive it for a while and see how it does stock.
04-02-2013 09:16 PM
HK_Runner I personally think a 4.56 will rev too high. I think the 4.10 ervs a bit high with 32s. 33s will be perfect and 35 may be just slightly to low. With my future 35s, I'll stick with 4.10s and maybe move to 4.56 IF i feel under-geared. Here in CO, I may feel under-geared at altitude.

Caveat- I only feel it revs too high on the highway (long trips) and not running around town or short highway trips. I suggest 4.10s, especially on flat land and if you are on the highway a lot.
04-02-2013 09:13 PM
Grim_Fandango23 Yeah I agree with you it seems like 4.56 for 33s would be overkill. I won't be doing too much heavy duty offroading so I hope 4.10s will be available to get.
04-02-2013 09:04 PM
DJL2 It depends on how much you value performance - I have stock 4.10 gears and 32 inch tires. Most of the time, my Jeep struggles to get out of its own way if the tach has anything less than 2500 rpm on it. I understand that's partly the engine (I've a 3.6...god bless those with the 3.8) and partly the vehicle weight, but good lord is it annoying at times.

I understand it's a compromise and that it means I need to row a few more gears to keep the engine where it needs to be. Will you notice a big difference going from 3.21 to 4.10 - yes, I should think so. You really don't need more for 33s unless you want it or figure you'll go bigger.
04-02-2013 09:00 PM
Grim_Fandango23
Quote:
Originally Posted by Lowerumble View Post
If 33s are DEFINETELY the end goal, then 4.10 are plenty as they are great with my 35s. But if spending the cash, then KNOW that is where you are going to stop. I am already starting to second guess if I am going to step up to 37s for summer use and keep 35s for winter....

Yeah I don't think I'll go much higher than 33's. I called a shop in the area and the guy said 4.10s might be a bit hard to find and if I wouldn't mind going with 4.56s. My only concern is the revs on the highway. I checked out the ratio chart and 4.56s would put me at around 2700 revs compared to the 4.10s at about 2400 revs.
04-02-2013 08:54 PM
Lowerumble If 33s are DEFINETELY the end goal, then 4.10 are plenty as they are great with my 35s. But if spending the cash, then KNOW that is where you are going to stop. I am already starting to second guess if I am going to step up to 37s for summer use and keep 35s for winter....
04-02-2013 08:51 PM
Grim_Fandango23
4.10s or 4.56s gears?

I have a 13 jk automatic and I want to go up to 33" duratracs. I have the 3.21s and I was wanting some opinions on whether to go with 4.10s or 4.56 for a regear.


Thanks

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 09:31 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC