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View Full Version : T18 into a CJ7

nickhuts
04-07-2010, 06:26 PM
I am thinking about doing the t18 trans swap in my 1980 Cj7. I am wondering if the trans bolts right in, is there any changes in my driveshaft leanghts, ect.. anyone ever done this swap? Right now I have a T150 transmission on a 304 V8. Thanks
carwash
04-07-2010, 08:13 PM
direct bolt in. I did this swap on a jeep i owned previously. retained the dana20 tcase as well.

at least i recall it being a direct swap, it was like 10 years ago..
jlynch
04-07-2010, 08:53 PM
There are many different kinds of T18's if you are lucky enough to find one out of a cj and it has the adapter to bolt it to the model 20 transfer case it will bolt right in, however your driveshaft lengths will change. You can get a T18 out of a jeep truck as well but it will need a short input shaft put on it. Ford T18's will also work with some modifications.

This guy knows all there is to know about T18's

http://www.partsmike.com/tech-help/id-t18/
KargoMaster
04-08-2010, 03:26 PM
Ok, this makes more sense... (I saw the other post first)...

The T-18 that you want is from 78-79 CJ ONLY... (6.32 first gear, aka wide ratio)

I was thinking that the 80 CJ was the oddball year -- a short output Dana300??
Are you saying that you have a Dana20 currently in the '80 CJ?

'80 was also the year that IH made a Dana300 that had the Dana20 bolt pattern... good luck finding one of those... I know of 1... and it's not for sale.
KargoMaster
04-08-2010, 03:29 PM
btw, here's your T-150 next to an NP435 (also very similar size to T-18):

http://i20.photobucket.com/albums/b234/KargoMaster/JeepParts/T-150_NP435-top.jpg
KargoMaster
04-08-2010, 03:36 PM
And finally....

(now that I've wet your appetite...)

I have the T-18 in question... but I wasn't really planning on splitting with it... a few Dana20's as well... When you know for sure what tcase you have and which one you want to run after conversion, let us know...

Give me a call at some point, I'll PM my number...
nickhuts
04-09-2010, 08:11 AM
And finally....

(now that I've wet your appetite...)

I have the T-18 in question... but I wasn't really planning on splitting with it... a few Dana20's as well... When you know for sure what tcase you have and which one you want to run after conversion, let us know...

Give me a call at some point, I'll PM my number...

I have a 2 dana 20s. one in the jeep and one spare. I have two t 150s one in the jeep and one spare.