I have a 231j tcase right now. I plan on running d60 and 14 in rear or d60 rear. Do you think my t case will be strong enough to handle the big axles on 37s?

also what does the J mean (NP231J)

 

j for jeep
d for dodge
HD for HD one.

and yes it will be fine, I would recommend the HD upgrade (bigger chain)

but you will be fine

 

For added strength build a 6 planatary low range for it or install a TeraLow 4:1.

 

Tera Low kits are prone to leak even under a stock cherokee....

 

If your gonna do a 60/14bff swap you might as well just build a 231/300 doubler!

 

Can't say I've ever heard that before. I've got a few friends running them too.

I've installed some of them and see no reason why they would leak if installed properly.

Some applications do require an additional seal.

 

What's the tera low kit run ya?

 

Unfortunetly I can't use one. They don't make one that mates to a GM tranny.

 

Ive heard about doublers what are they?and where can i get them?

 

Doublers do require a little bit of work.

here is a good write up

http://www.rockhardxj.com/viewtopic.php?t=1686

 

Do a google search for Box For Rock. There's also alot of info on Pirate4x4 for anyone that wants to build a 231/231 or 231/300 doubler.

 

So correct me if im wrong but it allows me to put the transfer case in lowx2 4wd

 

front digs, and low-low. yes. it is a GREAT option. you can also just 2wd and use the gear reduction

 

its hilarious to drive in 2 low

 

okay thamks for the thread advice it was alittle confusing cause i dont know alot about the gears and the whole purpose of the doubler