Gear Ration... - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > CJ Jeep Forum > CJ 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 10-29-2012, 08:34 AM   #1
Jeeper
 
1984 cj71987's Avatar
 
Join Date: Oct 2012
Posts: 62
Gear Ration...

I searched but to lazy to read... I know I might learn something...
Anyway currently running 33 x 12.50's with 3.13 gears on a 84 cj7, T-150, 5 speed. can do 55 -60 in fourth with about 2000 2100 rpm's if all gauges are correct. When I go to 35 x 12.50 or 35 x 10.50's would I need to change gears or will it be close enough not to see much difference? Thanks...

1984 cj71987 is offline   Quote Quick Reply
Old 10-29-2012, 08:48 AM   #2
Jeeper
 
derf's Avatar
 
Join Date: Oct 2012
Location: Cedar Rapids, IA
Posts: 1,265
I've never heard of Jeep axles having 3.13 gears available. Perhaps that was a typo? The RPMs at 60 suggest you meant 3.31.

The T-150 is a 3 speed manual. Perhaps you are thinking of the T-5, which is a 5 speed.

You really should be running shorter gears (higher numerically) with your 33's as it is.

My personal recommendation with 35" tires and a 5 speed is to go with 4.10's or 4.56 gears. That lets you get full use of your overdrive on the freeway.

__________________
2012 JK - 3.6/NSG370/NP241/D30/D44 - Grimm Jeeper
1986 J10 - 360/700R4/NP208/D44HD/D60FF - Truck Norris

My gear ratio calculator
derf is online now   Quote Quick Reply
Old 10-29-2012, 08:54 AM   #3
Jeeper
 
1984 cj71987's Avatar
 
Join Date: Oct 2012
Posts: 62
yep you were correct on every aspect, i have a touch of the tards sometimes. thanks that's why i like asking
1984 cj71987 is offline   Quote Quick Reply
Old 10-29-2012, 09:03 AM   #4
Jeeper
 
derf's Avatar
 
Join Date: Oct 2012
Location: Cedar Rapids, IA
Posts: 1,265
Quote:
Originally Posted by 1984 cj71987 View Post
yep you were correct on every aspect, i have a touch of the tards sometimes. thanks that's why i like asking
I'm having a rare morning of clarity today. I usually have a touch of the tard as well.
__________________
2012 JK - 3.6/NSG370/NP241/D30/D44 - Grimm Jeeper
1986 J10 - 360/700R4/NP208/D44HD/D60FF - Truck Norris

My gear ratio calculator
derf is online now   Quote Quick Reply
Old 10-29-2012, 08:36 PM   #5
Jeeper
 
Dempsey's Avatar
 
Join Date: Dec 2010
Location: Tobacco Country
Posts: 4,943
I assume you are running the 258 I6. I am running a T5 behind my 304 in my CJ. I have 4.10's and 33" tires. Does pretty good on the highway. I am in similar rpm range in 5th as you are in 4th now. For the type of terrain I wheel I wish I was a little lower.

If you plan to go to 35" tires my recommendation is 4.56. 4.88 if you want to be able to crawl.
__________________
'76 CJ7
It's red.
'99 TJ
It's red too.
Dempsey is offline   Quote Quick Reply
Old 10-30-2012, 06:48 AM   #6
Jeeper
 
1984 cj71987's Avatar
 
Join Date: Oct 2012
Posts: 62
Yes 258 I6. In 5th the rpm's are around 1600 to 1800. i can run at 65 mph in fourth at about 2300 or a little less.
1984 cj71987 is offline   Quote Quick Reply
Old 12-03-2012, 02:41 PM   #7
Jeeper
 
Join Date: Dec 2012
Posts: 17
search is your friend haha

jakekaminski 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




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 11:30 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