Re: what\'s involved in a tranny swap?

What kind of engine/T-case combo do your trucks have??

 

Re: what\'s involved in a tranny swap?

Ok, even though it's been raining. I just dropped the tranny out of the 85' donor xj. It has a selec trac tc(transfer case) and it seems better than my 207 tc, cause it already doesn't have a slip yoke, it's solid(if that makes sense). I still have no idea what the type of transmission it is, it's from an 85' it's a automatic, does anyone know which one it would be? Also I'll get a pic tomorrow, does anyone need anything off of it? I'm taking the gauges. Let me know...

 

Re: what\'s involved in a tranny swap?

Are the engines of equal displacement? Your 5-speed is probably a Peugeot 5 speed. They are known to suck.

 

Re: what\'s involved in a tranny swap?

The tranny you have is probably the junjy Peugot. The auto I think is a 909 or something Borg Warner. As far as the swap, I've heard a few times that you often have to change front and/or rear driveshafts for proper length, but I'm still not sure there. Anyway, I did a search, check out this site for tranny info: http://www.jeeptech.com/trans/

Enjoy,
Erik

 

Re: what\'s involved in a tranny swap?

OK, here ya go. If the '85 had a V-6, the tranny is a TF 999, and a 4 cyl its a Chrysler 904. The 904 can bolt to most AMC/Chrysler Jeep engines, including the 4.0L. The TF 999 can only bolt to these Chevy engines: 2.8L, 3.4L, 3.5L, and POSSIBLY the 4.3L V-6s. Both transmissions are quite reliable and stout, though I wouldn't try to hook 'em to a V-8.
The t-case is either the NP 228 or NP229. The 228 is rather durable, since it has a rebuildable differential inside. The 229, however, has an UNrebuildable viscious coupler inside. (There is a tag on the t-case, by the fill plug, with the modle type and the low range ratio on it!) When (not if) the 229 dies, it is Expensive to repair. Personally, I have an NP229 in storage, and an NP207 Command-Trac unit in my '84 XJ. For trail use, I think the 207 is a good unit. If you don't like the slip-yoke, try an NP231 or an NV241OR. The 241OR has a fixed yoke and 4:1 low range. (I'm thinking about one!) The 231 has slip-yoke eliminator kits available aftermarket. (Find a Dodge Dakota '89-current in a junkyard. They have 'em.)