The big problem you are going to have is that I am 98% sure that the AT you
want to use is too long. If the Cherokee has a Selectrac, then the
combination is definitely too long. Look at the 4wd shift knob on the
Cherokee. If it has 2h-4h-n-2l like your Wrangler, then it is Commandtrac,
which is the manual option. This means that the TC is not too long, but you
still have to worry about the transmission. If it has something else that
looks like full time four wheel drive, then it is Selectrac. The difference
is that the Selectrac has an interaxle differential in it, which is real
good for slick roads, but adds too much length to fit in a short wheelbase
vehicle like the Wrangler.

What you need to do is first measure from the back face of the engine block,
where it bolts to the transmission housing, to the back end of the
transmission, where it bolts to the transmission case. If this dimension is
longer on the Cherokee, then the transmission will not fit. Then make
another measurement, to the end of the TC where the rear drive shaft sticks
into it. It is important to realize that the rear drive shaft on the
Wranglers cannot be any shorter than it is, without increasing the
likelihood of problems such as vibration. People have installed longer
transmission/transfer case options, but not without welding a custom
driveshaft or resorting to expensive constant velocity joints or slip yoke
eliminators, that seem like they would be way out of range of your budget.

The spline count I am talking about is on the shaft between the transmission
and the TC. You would have to change this, if you decided that you could
use the transmission but not the TC. As far as I know, the output splined
shaft is likely to be the same. In other words, your existing drive shafts
will work, but only if the transmission/TC combination is exactly the same
length as what you have now. Otherwise, this is not a good idea for you.

You can get more information from the Advance Adapters Jeep Conversion
Manual, http://advanceadapters.com. The Conversion Manual is $10, and they
have gone to the trouble of measuring a number of different Jeep
transmissions and transmissions that might fit in Jeeps.

Earle

"bobvonbob" > wrote in message
ups.com...
> thanks all.
> Earl - can i ask you to clarify some things?
> 1st off - i am clueless as to the nature of the 'Selectrac' and
> 'Quadratrac' so what l do i need to look for to detemine their
> presence? 2nd - besides the driveshaft length - which is pretty
> obviously different i would imagine - can't i just swap my tired old
> Peugeut 5sp with the AT that comes with the Cherokee? since this is the
> tranny and TC that comes with the motor, it would thus eliminate any
> need for adapters for the CPS, as well as the problem of pilot bushing
> mismatch, and for finding a 4.0/5sp manual computer... isnt that right?
> all i would need would be a YJ driveshaft with the correct spline count
> yes? i assume my stock (5sp) shaft wont fit - correct?
> sorry for all the questions, trying to figure out if this is a good
> idea...
> cheers,
> bennett
>