smokin' 89

I'm looking to replace my dying Peugeot 5 speed In my 2wd Comanche with a world class T5 from one of my Mustangs. Has anyone done this before? I've seen a couple of T5 swaps on the AMC forums, but all of those have been bolting the T5 to a V8. I have the bell housing and clutch fork/throwout bearing from a mid eighties wrangler that had a Jeep T5, so I'm good in that respect. My main concern is getting the right flywheel/pressure plate/clutch/pilot bearing combo.

superj

probably not man. i notice that jeep forums are not full of info on engine and tranny mods. some people do know a fair bit of stuff but for the most part, alot of jeep people are beginners when it comes to actual in depth engine and tranny mods.

i cannot help you, i hardly do anything to hte jeep drive train because of how long and well built they are. for what hte jeep is built for, the engine and tranny are more then enough, to me.

maverickdan

have you checked the input shaft on the mustang trans, i think its different from a gm style input shaft. is your jeep a 2.5 or a 4.0?

5-90

AMC Gen-II/III V8 shares a bellhousing pattern with the "Modern Era" AMC I6, so you should be fine using the information there.

However, there are better choices than the T5 - it's really designed as a pax car box, and it's not really geared well for a light truck.

If you pillage around, you can score an AX-15 or an NV3550 from a 2WD XJ/MJ, or possible a 1993-1994ZJ, and that will bolt right up.

1988.5-1993 - AX-15, internal slave (AX-15i)
1994-1999 - AX-15, external slave (AX-15e)
2000-2001XJ - NV3550, same bellhousing and associated parts as AX-15e.

And, you'll have better gearing than you'll get in the T5. Considering you're going to throw this in an MJ, I think you'd want decent gearing...

Just an FYI - conversion between 2WD and 4WD incarnations of the same gearbox is possible, but it usually requires an overhaul (the 2WD mainshaft is longer than the 4WD version. The input and countershaft should be the same.)

If all you can find is a 2WD AX-4/AX-5 (4-150,) pass. It won't last very long behind the 242ci I6. Even the T5 is a bit dubious...

The OEM input on the BA-10, AX-15, and NV3550 used in Jeep is 1-1/8"-10, with either a ~5/8" (1987-1993) or ~7/8" (1994-2001) pilot diameter. The larger pilot may be used with the eariler crankshaft by using an early 1970's CJ/V8-304/three-speed manual pilot bushing. The clutch kits (disc and pressure plate) are the same all the way up.

smokin' 89

Thanks for the info on the pilot bearings, and clutch/pressure plate assy's.

As for the T5 being a "lightweight" capacity trans, I'm not worried about that as this trans is built, and has survived behind my 400hp 5.0 for years without any problems. I'm really looking for something that I can speed shift without issues. I have an AX15 in my cherokee with a Hurst pro billet shifter and it really doesnt like me much. The trans just cant keep up. That's why I wanted to get one of my Mustang T5's behind the 4.0. Besides, it should be a really cool project.

smokin' 89

Yes, the input shaft is different on the Mustang trans. It takes a a 10T-1-1/16 spline disc, while the Jeep takes a 10T-1-1/8 Spline. I'm sure that the pilot bearing diameters are different too.

My Jeep is a 4.0

Nstyfox

T-5's blow anyway why would you wanna put all that time into making one fit. I gernaded 2nd and 3rd in my gt at the track,had it rebuilt and beefed up then once i turbo'd my car 2nd went again.

smokin' 89

Let me go out on a limb here....I'm guessing that you had slicks on the car??? And you are surprised that it blew up? If this isnt the biggest case of "apples to oranges" Then I dont know what is. I'm pretty sure that your turbo 5.0 was probably producing just a little more torque that my 4.0 is making....and I dont forsee ever putting slicks on my Comanche anytime in the near future, but thanks for the constructive criticism.

Nstyfox

No slicks its a street car,i was on mickey thompson drag radials. Do you or have you ever owned a fox? If you did then you'd agree. Every mustang owner knows that t-5's blow only thing good about them is their cheap and easy to rebuild.

smokin' 89

Ok you werent running slicks, you were on drag radials...Now we are splitting hairs. Again, I'll go out on a limb, and just assume that your drag radials are a little more sticky than the truck tires on my (non-posi equipped) Comanche.
As for your comment as to have I ever owned a Fox....well, if you read my first post, I clearly stated that this T5 was out of ONE my Mustangs.

I cant say that I entirely agree with your statement... "that every Mustang Owner knows that t-5's blow" But I will say that "most" Mustang owners "Know" what the T-5's limitations are. So, again we end up back at the "Apples to Oranges" Discussion. I "Know" that my 4.0 wont produce enough torque to hurt the T-5....I "Know" that my Comanche doesnt have really sticky tires that will hook and put excessive stress on the trans....and I know that the T-5 out of my Mustang is far stronger than the Peugeot trans that is currently in my Jeep.

So, to get back on track here...this thread was to find info for parts comapatablity between the Jeep 4.0 and the Mustang T-5. NOT to bash the T-5 trans. (which in the back of my mind, I knew was going to happen).

I must thank senior member "5-90" as he pointed me in the direction of a wealth of information, that lead me to actual part numbers, and people that have experience in putting the Mustang T-5 behind an AMC engine. So a BIG thank you to him!!