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):

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

Quote:

Originally Posted by KargoMaster

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.

04-07-2010, 06:26 PM	#1
nickhuts GRAB A SNATCH BLOCK!! Join Date: Jul 2007 Location: Monroe Posts: 197	T18 into a CJ7 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 __________________ Powerstrokes, Mustangs, and Jeeps.. oh my

04-07-2010, 08:13 PM	#2
carwash pimpin' IS easy Join Date: Jan 2007 Location: Union, KY Posts: 3,344 Images: 605	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.. __________________

04-08-2010, 03:26 PM	#4
KargoMaster Cleaning off the rust... Join Date: Jan 2007 Location: Cincinnati, OH Posts: 1,009	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. __________________ brad 5.0L \| 435 \| 203 \| 300 \| 4.10 \| 39.5 Buildup BACK underway...

04-08-2010, 03:29 PM	#5
KargoMaster Cleaning off the rust... Join Date: Jan 2007 Location: Cincinnati, OH Posts: 1,009	btw, here's your T-150 next to an NP435 (also very similar size to T-18): __________________ brad 5.0L \| 435 \| 203 \| 300 \| 4.10 \| 39.5 Buildup BACK underway...

04-08-2010, 03:36 PM	#6
KargoMaster Cleaning off the rust... Join Date: Jan 2007 Location: Cincinnati, OH Posts: 1,009	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... __________________ brad 5.0L \| 435 \| 203 \| 300 \| 4.10 \| 39.5 Buildup BACK underway...

04-07-2010, 08:53 PM	#3
jlynch Join Date: Feb 2007 Posts: 97	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/