CJ7 transmission swap

[jdubya68]

I have an 81 CJ7 with the AMC 258 i6 / 4.2l engine, a T-4 Transmission and a wanna 300 Transfer Case . the Transmission and Transfer Case both gave out and I'm wanting to put a 5 speed Transmission in it. any suggestions? i use it for ranch work, trails and on the highway

 

[BusaDave9]

The T-4 is among the worst transmissions to go into a CJ. The only 5 speed to go into a CJ was the T-5 . It's just as bad as the T-4 but as a 5th gear. It would be the easiest swap but I wouldn't do it.
When I was in your shoes I put in a Ford T-18 Transmission but that's a 4 speed (a very heavy duty 4 speed). It bolted right up to the bellhousing after drilling 4 holes. I adapted the T-18 to mate to my Dana 300 (I had a '82 CJ7 at the time)
Are you sure you also need a new TCase? If so you could get a tranny and TCase as a matched set. Just make sure the TCase output is on the passenger side.
the NV4500 is a very heavy duty 5 speed. Check out this link: The NV4500 Transmission - Novak Conversions

 

[hole]

Ditto with what BusaDave said. How did the 300 Transfer Case give out? Short of running it without gear oil in it, they're hard to kill.

 

[jdubya68]

thanks. the front and rear seal gave out when i was on the highway and left a trail of fluid and it burned up.

 

[Jimbos76cj]

While not a direct bolt up a AX-15 can be easily swapped in. is a medium duty Transmission , and is a 5 speed..