Which Is The Better Transmission? - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 09-20-2009, 07:59 PM   #1
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Which Is The Better Transmission?

i want to know which is the better transmission for off roading. my cj currently has the borg-warner T4 (4 speed), but i also have an AX-15 (5 speed) that the hubby took out of his 1990 yj. he is going to rebuild it and either sell it or put it in my cj. so which one would be more beneficial to have?

jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 08:01 PM   #2
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
i'd probably say ax15 off the top of my head, go to www.novak-adapt.com and look in the knowledge section of those two trans. you should be able to determine for yourself there. i think the gearing in the ax15 is better, but i haven't looked at the t4 in a long time. i know the t4 is a little better than the 176, but most t4's get swapped out pretty quick.

you need a t18 in the cj.

__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 08:46 PM   #3
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Quote:
AX15


The AX15 is a surprisingly strong transmission, and was a serious improvement over many of its lighter-duty predecessors
  • Compatibility with AMC I6 and other engines, and adaptability to GM and Ford engines
  • Aluminum case. Decently low first gear with overdrive in fifth-gear
  • Surprisingly tough
  • Compatible with the NP231 and adaptable to the Dana 300, Dana 20 and Dana 18
  • 1988-1999 Jeeps
Quote:
The T4 was the standard four-speed in the 1982-1986 CJ
  • Compatible with AMC I4 & I6 engines
  • Aluminum case and top cover. Close-ratio first-gear and direct-drive in fourth
  • Neither strong, nor suited to conversions or serious off-road use
  • 1982-1986 CJ Jeeps
i think i am going to go with the AX-15. this project is not exactly in the near future, but it is good to know that i have the option and that it will work with my engine and t-case. i'm hoping that it will give me a lower 1st gear and will better supplement my low range kit.
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 08:58 PM   #4
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
Quote:
Borg-Warner T18 & T19 Transmissions
The T18 is a reknown, heavy-duty truck transmission designed for and used in ˝, 3/4 and 1+ ton trucks. The T18 was made by Borg-Warner Gear from 1966 to 1990. They are found in Ford, Jeep and IH trucks. The T18 is the improved successor to the T98 transmission.
Features
The T18 is a top loaded, top shifting truck style transmission. The Ford and some Jeep T18s enjoys a very low compound gear at 6.32:1 and as such it is a popular choice for those wanting a very low crawling gear. T19 versions offer a 6.32:1 (IH), 5:1 or 4:1 (Ford) low gear.
The T18 is fully synchronized in the second through fourth gears. All gears are helically cut except first and reverse, which are spur gears. T19s are syncrhonized in all gears and feature all helically cut gears.
here's what i have for my build, i got for 20 bux w/ a t case :

Quote:
GM Muncie SM465 Transmission
The SM465 is an outstanding, heavy-duty truck transmission designed and used in ˝, 3/4 and 1+ ton trucks. The SM465 was made by General Motors from 1968 to 1991. They are found primarily in GM and Chevrolet trucks, Blazers, Suburbans and many other models falling under the 1/4-ton to 1-1/2-ton platforms.
The 465 is an intellegently designed and very well-built transmission and remains easy to locate and generally inexpensive to buy and maintain. The strength, relatively short size and the gearing of the transmission make it a good choice for a variety of on-road and off-road situations. It has a very good set of road manners contrasted by its enormous off-road brawn.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 09:07 PM   #5
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Quote:
Originally Posted by jpdocdave View Post
here's what i have for my build, i got for 20 bux w/ a t case :
that's freakin sweet. how did you get that deal?
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 09:12 PM   #6
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
ebay.....i was the only bidder, and it came with the front half for my doubler t cases. it was an hour drive, sweet find.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 09:17 PM   #7
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
i love ebay! there are some wicked awesome deals on there. does that trans bolt up easily to your jeep? what engine do you have in the crazy red head?
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 09:22 PM   #8
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
Quote:
Originally Posted by jgano23 View Post
i love ebay! there are some wicked awesome deals on there. does that trans bolt up easily to your jeep? what engine do you have in the crazy red head?
i can buy an adapter to make it bolt to the stroker I6 i'm building, or novak gives detailed directions on how to modify an older 4.2 bellhousing to work, so i'm doing that since i have one laying around, gotta drill a hole or two and make a spot for the crank sensor.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 09:30 PM   #9
after birthday glow
 
morphious's Avatar
 
Join Date: Jul 2009
Location: wisconsin
Posts: 1,963
Images: 1
i had one in my blazer that thing was great so how much is that stroker going to cost u
__________________
some say why i say
its a jeep thing u wouldn't understand
morphious is offline   Quote Quick Reply
Old 09-20-2009, 09:36 PM   #10
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
Quote:
Originally Posted by morphious View Post
i had one in my blazer that thing was great so how much is that stroker going to cost u
there's a lot of different ways to build it, but i'm keeping costs down as far as i'm not buying forged pistons and crazy stuff. i haven't added it up in a while, i have the engine, and 4.2 crank and rods, gotta do machine work, buy a rebuild kit, machine the front of the crank down for a serpentine belt system instead of v belt system, i'll probably buy the roller rocker just cuz. i dunno, a thousand maybe since i can build it and i get wholesale price from our machine shop.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 09:39 PM   #11
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Quote:
Originally Posted by jpdocdave View Post
i can buy an adapter to make it bolt to the stroker I6 i'm building, or novak gives detailed directions on how to modify an older 4.2 bellhousing to work, so i'm doing that since i have one laying around, gotta drill a hole or two and make a spot for the crank sensor.
i don't know anything about strokers or how they work, so maybe this is a stupid question. are you keeping the 4.2 carbed? swapping the 4.0 heads? or going w/ tbi?
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 10:00 PM   #12
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
Quote:
Originally Posted by jgano23 View Post
i don't know anything about strokers or how they work, so maybe this is a stupid question. are you keeping the 4.2 carbed? swapping the 4.0 heads? or going w/ tbi?
naw, stroker just means the stroke of the piston is lengthened. jeep straight sixes make a great stroker because the 4.2 engine had a longer crank (stroke), but smaller piston, made better torque. the 4.0 has a shorter crank (stroke), and larger pistons, more hp and road manners. and it can be built with almost no modification.

so, take the best of both motors, 4.2 crank and rods make the longer stroke for the fuel injected 4.0 with the bigger pistons. so its a 4.0 motor, with the 4.2 crank and rods. and what i like is it is indistinguishable under the hood, it will look like a normal 4.0, and it bolts in obviously just like a 4.0. makes about the same numbers as a normal 350 engine. a lot of my jeep is going to look not too extreme, but it is being built. almost a sleeper wheeler, but the 4 stick shifts will be a clue.

how did we get on this subject, i really wasn't trying to do that i have a thread on my build, no one cares
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 10:04 PM   #13
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Quote:
Originally Posted by jpdocdave View Post
naw, stroker just means the stroke of the piston is lengthened. jeep straight sixes make a great stroker because the 4.2 engine had a longer crank (stroke), but smaller piston, made better torque. the 4.0 has a shorter crank (stroke), and larger pistons, more hp and road manners. and it can be built with almost no modification.

so, take the best of both motors, 4.2 crank and rods make the longer stroke for the fuel injected 4.0 with the bigger pistons. so its a 4.0 motor, with the 4.2 crank and rods. and what i like is it is indistinguishable under the hood, it will look like a normal 4.0, and it bolts in obviously just like a 4.0. makes about the same numbers as a normal 350 engine. a lot of my jeep is going to look not too extreme, but it is being built. almost a sleeper wheeler, but the 4 stick shifts will be a clue.

how did we get on this subject, i really wasn't trying to do that i have a thread on my build, no one cares
the tread went this way b/c my question was answered, and your build is waaaaay more interesting than my ax-15.

anyway, i've heard of twin stick but 4 sticks??
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 10:05 PM   #14
after birthday glow
 
morphious's Avatar
 
Join Date: Jul 2009
Location: wisconsin
Posts: 1,963
Images: 1
my bad sorry
__________________
some say why i say
its a jeep thing u wouldn't understand
morphious is offline   Quote Quick Reply
Old 09-20-2009, 10:06 PM   #15
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
1 manual trans + 1 range box on doubler t case + 2 sticks on the d300
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 10:07 PM   #16
after birthday glow
 
morphious's Avatar
 
Join Date: Jul 2009
Location: wisconsin
Posts: 1,963
Images: 1
crap that's a lot of levers
__________________
some say why i say
its a jeep thing u wouldn't understand
morphious is offline   Quote Quick Reply
Old 09-20-2009, 10:08 PM   #17
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
ya it is. you need to get your ass in gear and get this thing done and together, i wanna see it.
jgano23 is offline   Quote Quick Reply
Old 09-20-2009, 10:09 PM   #18
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
Quote:
Originally Posted by morphious View Post
crap that's a lot of levers
ya, hope i learn how to use them, or else i'll look kinda silly
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 10:10 PM   #19
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
i will be updating soon, my only goal is by the end of 2009 having a rolling chassis, axles built and under the jeep w/ the springs. i'm ordering springs this week, and rear axle is built.

if my money tree i planted would start growing i could get this thing built. i have a 3 year goal from here, rolling chassis, build the drive line, body
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 09-20-2009, 10:17 PM   #20
after birthday glow
 
morphious's Avatar
 
Join Date: Jul 2009
Location: wisconsin
Posts: 1,963
Images: 1
dang long term project just took on a new meaning to u huh
__________________
some say why i say
its a jeep thing u wouldn't understand
morphious is offline   Quote Quick Reply
Old 09-21-2009, 08:14 AM   #21
that's what she said

WF Supporting Member
 
jgano23's Avatar
 
Join Date: Oct 2008
Location: \m/-_-\m/
Posts: 16,482
Send a message via AIM to jgano23 Send a message via Yahoo to jgano23
Quote:
Originally Posted by morphious View Post
dang long term project just took on a new meaning to u huh
my hubby's yj has been a work in progress since 2004.
jgano23 is offline   Quote Quick Reply
Old 09-21-2009, 09:17 AM   #22
after birthday glow
 
morphious's Avatar
 
Join Date: Jul 2009
Location: wisconsin
Posts: 1,963
Images: 1
well work in progress its a jeep its never done

__________________
some say why i say
its a jeep thing u wouldn't understand
morphious 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
2004 Unlimited Auto Transmission Problem: Unlimited TJ Tech Forum 19 07-18-2014 09:31 AM
clacking in transmission stuck in reverse feels like neutral redhead_yooper YJ Tech Forum 6 12-20-2009 09:18 AM
Thoughts on Transmission Replacement Unlimited TJ Tech Forum 6 06-28-2009 11:43 PM
Clutch? Transmission? Some advice needed ryobi YJ Tech Forum 4 10-10-2007 09:33 AM
tow bar for 2007 Wrangler X douglassoilco JK General Discussion Forum 5 09-07-2007 11:35 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:44 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