Another gear ratio question...im sorry - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ 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 05-20-2010, 07:23 PM   #1
Jeeper
 
pakman55's Avatar
 
Join Date: Nov 2009
Location: The 363
Posts: 4,803
Send a message via Yahoo to pakman55
Another gear ratio question...im sorry

Ok quick question:

I have an 01 4 cyl auto with 4:10's. Im looking to add a 4" lift and 33"s. I know there will be power loss, I know mpg s will suffer, but the big thing is will it get to 65 on the freeway? I dont care how fast ill get there but I need to drive 20 mins on the highway everyday. I plan to regear when I get the dough but will it work until I can?
Thanks, Pearson

__________________
Life, Liberty and the Pursuit of Happiness
pakman55 is offline   Quote Quick Reply
Old 05-20-2010, 07:55 PM   #2
Jeeper
 
Join Date: Mar 2010
Location: Connecticut
Posts: 449
I have a 97' 4 banger 5 speed manual, and I have 31'' tires with a 2.5 " lift and I have 4:10 gearing... I still hit 75-80 mph... Sure the acceleration isn't the best but I still get up there!
But i think that you would get up to 65-70

97'wrangler is offline   Quote Quick Reply
Old 05-20-2010, 09:46 PM   #3
Jeeper
 
birdhunter's Avatar
 
Join Date: Jan 2009
Location: Wisconsin
Posts: 1,495
Sure if there arent alot of hills
and the headwind isnt too bad
__________________

"locked and loaded"
birdhunter is offline   Quote Quick Reply
Old 05-21-2010, 06:40 AM   #4
Jeeper
 
pakman55's Avatar
 
Join Date: Nov 2009
Location: The 363
Posts: 4,803
Send a message via Yahoo to pakman55
Ok its mostly flat.. are you serious if there is a wind I wont make it to 65?
__________________
Life, Liberty and the Pursuit of Happiness
pakman55 is offline   Quote Quick Reply
Old 05-23-2010, 04:50 PM   #5
Jeeper
 
RubiChick's Avatar
 
Join Date: May 2010
Location: Fort Worth, TX
Posts: 758
what is the stock gear ratio? I just got an 02 TJ 5 speed and wow it is slow. Can you shift over 3rpms or is this bad for the engine?
RubiChick is offline   Quote Quick Reply
Old 05-23-2010, 06:28 PM   #6
Jeeper
 
RubiChick's Avatar
 
Join Date: May 2010
Location: Fort Worth, TX
Posts: 758
Quote:
Originally Posted by pakman55 View Post
Ok quick question:

I have an 01 4 cyl auto with 4:10's. Im looking to add a 4" lift and 33"s. I know there will be power loss, I know mpg s will suffer, but the big thing is will it get to 65 on the freeway? I dont care how fast ill get there but I need to drive 20 mins on the highway everyday. I plan to regear when I get the dough but will it work until I can?
Thanks, Pearson
With you having 4:10 how is the acceleration and speed? I have an 02 stock and Im planning on changing gears to 4:10 with 31x10.50x15. But don't know if this will improve much.
RubiChick is offline   Quote Quick Reply
Old 05-24-2010, 12:12 PM   #7
Jeeper
 
530ktm's Avatar
 
Join Date: May 2010
Location: Southern California
Posts: 3,703
Images: 3
I agree with Birdhunter. I had the 97 with the 4 banger and 5 speed and 30 inch tires and it would go okay on the freeway, with no head wind or hills. If you put 33 inch tires on yours with the automatic I predict slow motion.
530ktm is offline   Quote Quick Reply
Old 05-24-2010, 12:15 PM   #8
Jeeper
 
530ktm's Avatar
 
Join Date: May 2010
Location: Southern California
Posts: 3,703
Images: 3
Quote:
Originally Posted by fitchick02 View Post
what is the stock gear ratio? I just got an 02 TJ 5 speed and wow it is slow. Can you shift over 3rpms or is this bad for the engine?
The stock gearing is usually 3.73 for the 5 speed and 6 cylinder. If yours is the 4 cylinder the gearing is usually 4.10. I always shift around 3,000 rpm but you can certainly go higher with no damage to the engine. You just don't want to drive around and 4,500 all day long.
530ktm is offline   Quote Quick Reply
Old 08-25-2010, 12:02 PM   #9
Jeeper
 
wranglertj01's Avatar
 
Join Date: Jul 2010
Posts: 60
Quote:
Originally Posted by 530ktm View Post
The stock gearing is usually 3.73 for the 5 speed and 6 cylinder. If yours is the 4 cylinder the gearing is usually 4.10. I always shift around 3,000 rpm but you can certainly go higher with no damage to the engine. You just don't want to drive around and 4,500 all day long.
the stock gearing is wrong on this atleast for the 4.0... i know all of the 5 speed sport models came with 3.07 gears lj came with 3.73 and rubi got 4.10 but in a dana 44 front and rear ... lj got the dana 30 front with would swap but dana 44 rear... from what i understand the 2.4L mostly had 3.73 and 4.10 gears depending on tranny
wranglertj01 is offline   Quote Quick Reply
Old 08-25-2010, 12:24 PM   #10
Jeeper
 
Join Date: Mar 2010
Location: Baton Rouge-New Orleans area
Posts: 233
Quote:
Originally Posted by wranglertj01 View Post
the stock gearing is wrong on this atleast for the 4.0... i know all of the 5 speed sport models came with 3.07 gears lj came with 3.73 and rubi got 4.10 but in a dana 44 front and rear ... lj got the dana 30 front with would swap but dana 44 rear... from what i understand the 2.4L mostly had 3.73 and 4.10 gears depending on tranny


Hmmmmmm........don't know where you got your info, but my 03 TJ Sport has a Dana 44 rear and 3.73's from the factory.....and the 4.0 engine......
jim_n_Looziana is offline   Quote Quick Reply
Old 08-25-2010, 12:36 PM   #11
Jeeper
 
Wildkarde's Avatar
 
Join Date: Jun 2010
Location: In the mountains
Posts: 327
The d44 was optional equipment and came with 3.73's, many of the d 35's came with 3.07
__________________
"Time you enjoy wasting, was not wasted"- John Lennon

"The Jeep is a manly device. And a womanly device. An American device. It’s a fitting instrument to transport the free people of a free nation with the respect to which we are entitled and the dignity that we deserve. Okay, we’re a little crazy to have a Jeep for a daily driver. But if we go off our meds, we might wind up in a Prius"-P.J.O'rourke
Wildkarde is offline   Quote Quick Reply
Old 08-25-2010, 02:09 PM   #12
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,096
Images: 2
Quote:
Originally Posted by wranglertj01 View Post
the stock gearing is wrong on this atleast for the 4.0... i know all of the 5 speed sport models came with 3.07 gears lj came with 3.73 and rubi got 4.10 but in a dana 44 front and rear .
Not at all. When talking about the 4.0L Sport, it came from the factory with either 3.07 or 3.55 for '97 and 3.07 or 3.73 for '98 to '06 models. That was with the Dana 35c rear end.

If the '97 to '06 Sport (4.0L engine) came with the optional extra-cost Dana 44 rear axle, it always came with 3.73. The LJ came with 3.73 because the Dana 44 rear axle was standard.

Dealers actually control what ratio their Dana 35c equipped TJs arrive with, they could choose either 3.07 or 3.55 ('97 only), or 3.07 or 3.73 for '98 and newer at the same cost. The dealer orders the ratio they want, 3.07 or 3.73 at the same cost.

Quote:
Originally Posted by Wildkarde View Post
The d44 was optional equipment and came with 3.73's, many of the d 35's came with 3.07
And many of the D35c axles also came with 3.73 at no extra cost. All that depends solely on how the dealer ordered his new TJs. They could be ordered with either ratio with no cost difference between them.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 08-25-2010, 03:17 PM   #13
Jeeper
 
burton160w's Avatar
 
Join Date: Oct 2009
Location: Underneath my TJ
Posts: 1,639
Which makes no sense why you wouldn't get the lower ratio. One thing Jerry forgot to mention (and I may be wrong about) is that the 3.73 gearing on the D35c axles were optional equipment for manual transmissions. Mine is a 99 TJ Sport with a manual and 3.73 gearing.
__________________
It's got a Willy's body, a Chevy engine, Ford axles, GM transmission, and Dodge steering components... it must be a Wrangler.
burton160w is offline   Quote Quick Reply
Old 08-25-2010, 03:25 PM   #14
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,096
Images: 2
Quote:
Originally Posted by burton160w View Post
Which makes no sense why you wouldn't get the lower ratio. One thing Jerry forgot to mention (and I may be wrong about) is that the 3.73 gearing on the D35c axles were optional equipment for manual transmissions.
There was a simple choice that could be made, 3.07 or 3.73, at the time the TJ was ordered by the dealer. It was optional to select either ratio but the 3.73 did not cost any more to order than the 3.07 did... no extra cost for the 3.73.

3.07 was for those buyers who were only concerned with getting the best possible mpg (or were clueless either way about ratios) and is the ratio Jeep used to calculate the Wrangler's overall fleet mpg rating for the EPA mileage certifications.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 08-25-2010, 06:31 PM   #15
Jeeper
 
lancetkenyon's Avatar
 
Join Date: Feb 2010
Location: AZ-Rock heaven
Posts: 670
Quote:
Originally Posted by wranglertj01 View Post
the stock gearing is wrong on this atleast for the 4.0... i know all of the 5 speed sport models came with 3.07 gears lj came with 3.73 and rubi got 4.10 but in a dana 44 front and rear ... lj got the dana 30 front with would swap but dana 44 rear... from what i understand the 2.4L mostly had 3.73 and 4.10 gears depending on tranny
Try again. Mine came stock with a 4.0, 5 spd and 3.73s in a D30/D44 combo too.

As for MY opinion.....if I had a 4 popper and was going to 33s, I would run 4.88 R&P.
lancetkenyon is offline   Quote Quick Reply
Old 08-25-2010, 06:35 PM   #16
Jeeper
 
lancetkenyon's Avatar
 
Join Date: Feb 2010
Location: AZ-Rock heaven
Posts: 670
Quote:
Originally Posted by Jerry Bransford View Post

3.07 was for those buyers who were only concerned with getting the best possible mpg (or were clueless either way about ratios) and is the ratio Jeep used to calculate the Wrangler's overall fleet mpg rating for the EPA mileage certifications.
While running 55 MPH down a 6% grade with a tailwind of 65MPH.
lancetkenyon is offline   Quote Quick Reply
Old 08-26-2010, 07:46 AM   #17
Jeeper
 
wranglertj01's Avatar
 
Join Date: Jul 2010
Posts: 60
ok keep in mind people i'm talking about stock standard options i never said the tj sport didn't come with a dana 44 that was a optional upgrade from the factory you had to ask for it to get it please don't read to far into it

wranglertj01 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
JK 09 Automatic Wrangler Gear Ratio Question whathajeep JK Tech Forum 4 02-14-2010 08:33 AM
gear ratio question jeepers92 YJ General Discussion Forum 0 09-14-2009 01:08 PM
Gear Ratio Question Firecracker TJ General Discussion Forum 6 06-14-2009 10:06 AM
Question on changing Axle Gear Ratio mbrown55 YJ Tech Forum 1 01-25-2009 04:19 PM
Gear ratio question atj54 YJ Tech Forum 5 10-22-2007 08:36 PM


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 06:18 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