'73 CJ5 Transmission

Wondering what transmission will bolt up to my stock 73 cj5. It has a 3 speed in there right now but i would like to put a 4 speed in. Also how can you tell what Tcase is in it and also front and rear diffs. I am new to rebuilding jeeps so I could use some help. Thanks

 

What's your date of manufacture?
Your VIN shows you have a '74.

You "should" have a Dana 20 t-case , Dana 44 rear axle, and Dana 30 front axle.

What are you planning that makes you want to switch to the 4spd?

There is a TON of great info on Novak's website. Just look at the stuff on the sidebar there.

Here is the trans I would be most inclined to swap in...
http://www.novak-adapt.com/knowledge/t18_t19.htm

 

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I would like a granny gear, and I'm not sure on the date of manufacture, I think it may have been built in 73 but sold in 74. Do you know if there is another way to tell besides the vin.
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There might be some distinguishing marks between a 73 and 74, but that's a hit and miss too. It would be easier to tell us the current engine trans combo. I would have to say that the T18 is probably the most common swap for a good 4 speed transmission, although, it really works as a 3 speed because the first gear is so low and not synchronized I don't think many people use it when casually driving...and the 4th gear is 1:1 ratio.

Do a search on T18 and you'll find LOADS of information.

 

T18 family also includes T19 and SM435. easier to find a T19 that is 5-1 first in a wrecking yard. I did this swap in my 74'. T19 is a fully syncro first and I love it. I have 750 in the swap. nothing will bolt right up to the bell housing. you can swap the bell housing with a AMC bolt pattern to a T176 4 speed. Then change the output shaft to fit the transfercase. There really is no direct bolt in unless you find stuff already adapted together that you can just install.

 

Do you still have the yellow tag on the dash?
It has the manufacture date.Another place to check is the emissions tag under the hood on the radiator support. It will state what M.Y. emissions it complies with. It may be stamped into the rear bumper/crossmember also.
Usually starting in september, the next model year is in production. So a MFR date of 09,10,11,12/73 would have been a '74 M.Y.

 

There were T-18's used in the long fender's up to '76 that were 4.03-1 first gear and in late '76/early '77 they went to the 6.32-1 version. If you get all the parts it's very close to a bolt in other than cross member and drivelines. The T-18 was used '72 or '73 to '75 so could be a bolt in, but is hard to find.

 

I never said T18's did not come in these rigs. What I said was, there is not a direct bolt in using his current bell housing. The T18 family has a different bolt pattern to the bell and the bell housing is shorter than the 3 speed bell housing.
I was giving the gentleman a current, today common swap that is fairly cost effective and easy to find instead of parts that are not hardly locatable.
I have done this swap and have researched all these parts extensively prior to my swap.

 

I appreciate that you are trying to be helpful and to give accurate information. However, your reply contains some errors.

The intermediate CJs from '72 to '75 with the 258 and the 4.02:1 1st (close ratio) T-18 use the same bell as the T-14 and the T-15. They are fitted with a 7" long input shaft and use a plate adapter between the bell and the transmission. The pre-80 J-truck and Wagoneer with the 258 and T-18 use the same setup except they have the 6.32:1 1st (wide ratio) T-18. The truck setup is pretty scarce, but they are out there, and would work fine in a CJ. Lots of the 258/T-18 CJs were sold. A transplant of one of the CJ transmissions would be an easy swap.

The '76-79 CJs may use a shorter bell and input shaft, but they certainly have their own bells that will bolt up directly to an AMC engine, and do not use a plate adapter. To use these T-18s, you'd have to bring along the bell that they came with from the factory. These setups are also fairly scarce, but you could probably find one with some searching.

Also, there's no SM435. I expect you meant to type NP435. The NP435 was used in Ford trucks, and was made by New Process Gear. The T-18 and T-19 were made by Borg-Warner, a different company.

 

And that's why I said you have to get ALL the parts. ALL the parts include the bellhousing, drivelines, floor plates, crossmember, etc.

The 5-1 T-19 is really not all that common. You may have been lucky to find one but they aren't easily found in most areas. Especially the Ford version. The 6.32-1 or 4.02-1 version is much more common. At least in the couple hundred I've built for Jeeps.