gearing...PLZ HELP - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-08-2013, 01:57 PM   #1
Jeeper
 
Join Date: Oct 2009
Posts: 33
gearing...PLZ HELP

Hey guys need some advice...I have 2011 JKU running 33's with a level lift...its an automatic with 3.73 gears.

The freeway driving / slight inclines are driving me NUTS!!
At 60mph on the freeway I'm at 1600 ish rpms
if i hit a slight incline the thing falls on its face.

what gearing should I go to?

Daily driver, no wheeling, would like to keep gas mileage "close to what I get now" (16-17 mpg).

thnx in advance

bcummings is offline   Quote Quick Reply
Old 07-08-2013, 02:03 PM   #2
Sponsoring Vendor
 
JPi4.0's Avatar
 
Join Date: Feb 2012
Posts: 850
Click image for larger version

Name:	JK_Gearing_Chart.jpg
Views:	127
Size:	235.3 KB
ID:	270363

__________________
Jeeperformance, Inc
Yucaipa CA.
877-795-JEEP
https://www.facebook.com/Jeeperformanceinc http://www.jeeperformanceinc.com/
JPi4.0 is offline   Quote Quick Reply
Old 07-08-2013, 05:36 PM   #3
Jeeper
 
HK_Runner's Avatar
 
Join Date: Apr 2012
Location: Ken Caryl Valley, Colorado
Posts: 2,219
Looks like 5.13 or 5.38 (assuming chart above is around 70 MPH). I have a 2012 with the 3.6 and 35s. Also have to regear before the damn thing irritates me to death. However, I am targeting 4.56.
__________________
2014 JKU Rubicon- all white with tan leather

LOD front bumper, AEV rear bumper, TeraFlex tire carrier, Shrockworks sliders, Method Standard wheels, 35" MTR Kevlars, Englewood driveshafts, Synergy 3" Lift, Artec truss, Teraflex C-gussets, Grabars, HotHead Liners, MORE dead pedal, Uniden 520 XL, 10lb CO2 tank...
HK_Runner is offline   Quote Quick Reply
Old 07-08-2013, 05:44 PM   #4
Jeeper
 
JeeperJake's Avatar
 
Join Date: Jul 2010
Posts: 2,799
OP:

one temporary measure that might help, is to switch OD off at the start of those little inclines.

My own 08JK with same gearing pulled various 'slight inclines' with the original Dueler tires. Just changing to the same circumference traction tire (OK, they were 1/2" more, but still sub-33") dropped my RPM enough that the tranny wasn't happy at the same speed.

I found pushing the OD button at the right places did wonders for my own sense of 'uninterrupted forward motion'.
__________________
get in--buckle up--hang on
"soothing agricultural implement/personal servant/Walter Mitty multidimensional access utility device conveniently travels on pavement when necessary and often keeps me warm/cool/dry/soothed as needed."
JeeperJake is offline   Quote Quick Reply
Old 07-08-2013, 06:05 PM   #5
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 593
I'd say 4.56 or 4.88 based on that chart. What tires are they? most 33s run small. My bet is 4.56 would work for what you're looking for.

Of course, my advice is coming from a guy with a 3.8 manual running the 3.21s with 33s in florida.
vacca foeda is online now   Quote Quick Reply
Old 07-08-2013, 08:12 PM   #6
Moderator

WF Supporting Member
::WF Moderator::
 
jkjeeper06's Avatar
 
Join Date: Jul 2010
Posts: 3,412
4.88. That will work well with the 4 speed. It's a little under geared from the factory. We have a member, Jimbox, on 33's and 5.38 gears and got 17-18mpg
jkjeeper06 is offline   Quote Quick Reply
Old 07-08-2013, 08:16 PM   #7
Jeeper
 
Martinm66's Avatar
 
Join Date: May 2013
Posts: 60
This is the 3.8 chart. The 3.6 is a little different if my memory is working
Martinm66 is offline   Quote Quick Reply
Old 07-08-2013, 08:21 PM   #8
Jeeper
 
Martinm66's Avatar
 
Join Date: May 2013
Posts: 60
I think I found the 3.6 chart.
Attached Thumbnails
Click image for larger version

Name:	image-2207134616.jpg
Views:	30
Size:	229.7 KB
ID:	270492  
Martinm66 is offline   Quote Quick Reply
Old 07-08-2013, 08:38 PM   #9
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 593
2011 is the 3.8 the switch to the 3.6 happened in 2012
vacca foeda is online now   Quote Quick Reply
Old 07-08-2013, 09:05 PM   #10
Jeeper
 
CJ7nvrstk's Avatar
 
Join Date: Jul 2012
Location: Prosper, TX
Posts: 428
4.56s would likely be best for the use you describe.

__________________
11 JKU
85 CJ

RED Friday. Remember Everyone Deployed
CJ7nvrstk is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

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.



Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:30 PM.



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