will commando guts go in an early cj5?

Hey guys,
I'm a new member that just joined last night. I wanted to say thanks for having this forum. It's great to know I'm not the only one who is insane about jeeps.
I have a tech question I hope you can help me with. I recentley bought a skanky 1965 cj-5 tuxedo park MKIV with a f-134, t-90 column shift, d18 single lever, d27/d44 etc. etc. I also have a 69' commando with a 225, t-14, and a d20. I want to take out the f-134/t-90 and replace it with the 225/t-14. Is this possible and easy?
I know I will have to do motor mounts and drivelines but since the d18 single lever was behind a t-90 I think it is a small hole. The t-14 has a d20 which I think is a large hole. Can this be done? any help would be great!

 

For starters the rear axle differential is offset to the right on your cj and the dana 20 is looking for a center mounted diff.

The t/c levers will not be in the same position.

I betcha that someone on this site would have a large hole model 18 transfer case for sale, or maybe a t-14A with the t/c

Oh, welcome aboard. This is a pretty well run web site and folks are helpful here.

 

Dana 20 and large hole dana 18's are the same case.

So with the exception of a bullgear for the t14 dana, you can take the large hole dana 20 case and swap the guts from the dana 18 into it thus gaining a large hole dana 18 transfercase, you will then need to purchase the proper bullgear to go on the back of the t14 to run the transfercase as the one from the t90 will not work. Other than that it should work fine and you will have a 225 with a t14 and a large hole dana 18. You can verify with a few other guys on here about tooth count, because that I'm not sure of but what you want is doable.

 

thanks Mcruff and Kamel! what I was wanting to do was run the 225/ t-14/ dana 18. I was wondering if I could use the dana 18 that I have with the t-14. I thought all the single levers were large holes too. It being behind a t-90 I don't know. Any thoughts?

 

I think that if it has the large intermediate shaft (1 ¼" diameter) it is a large hole case. You can check this from under the vehicle with a ruler or scale. But the bullgear from the t90 will still not work on the t14.

 

First, Welcome from Portland, OR!
Please fil out your profile. You can do this by going to user cp. Who knows, maybe one of us is right around the corner and can help!
Pics, we love pics!
I'll add to what the other folks already said. The T-90 bull gear will not work with the T-14 because the T-90 has a 6 spline output shaft and the T-14 has a 10 spline output shaft. Fear not! these are available through many sources including R&P ( I know they have a bunch of used ones on the shelf, 503-557-8911), Probably Walck's, Krage, etc. A twin stick is a beautiful thing so if you do rebuild or need to swap cases that would be a perfect time to convert your transfer case. Nickmil.

 

This may lead to another thread but what are the advantages of the twin stick over a single lever?? I guess I should caveat this with "in your opinions"...

Oh, and welcome from another one of the Alabama gang, Mr. Guru-

Mark

 

Nope, that's not correct. I have a small hole large intermediate shaft case in my spare parts pile. Good call on the bull gear though.

You can use the gears out of the D20 in your D18 setup, but you will also get the 2.03 low range. You can also get a Warn/Saturn OD to go with the D18 gear set rather than getting a new bull gear. Also, you could swap the centered rear out of the commando into your CJ and keep the D20 that way. Some commandos came with a D30 rear which you want to avoid like the plague. Others came with a flanged D44 which would be an upgrade.

 

Mark if you take the interlock pill out you can have 2wd low.

 

Rockin!! R) Perhaps I might look into tossing some money towards that. Afterall, a Jeep is a great place to misplace ca$h!

Mark

 

I installed one in mine Mark. I like the fact that the levers are longer and much easier to shift.

 

What mods, if any, did you make to the floor to accommodate the shifters?

 

Remove the access plate beside the shift tower and then trim about an inch ou on the parssenger side of the hole. I have a dana 300 twin stick shift boot that covers the hole. Put a solid rubber gasket in the original hole to close it up.

 

Good deal- I'll look at yours when we get a chance-

 

I am definetly going to run twin sticks. I think they are way cooler. I also plan on taking out the interlock pin. On my tuxedo park it already had the hole for the twin sticks. all I have to do is remove two bolts and take off the cover.