What's the gm 242 rated at? I remember reading a higher number, might have been the gm version

 

gm 242 is rated at just over 2000ft/lbs

 

nv231............1885
nv231hd ........1940
nv241.............5555
nv242.............1486
nv242hd .........2028
nv242hd amg (hummer) 2340
nv246 .............2281
nv261hd .........5430
nv261shd ........5677
nv271 (manually shifted) 7890
nv273 (electronically shifted) 7890

 

I'd be interested to see a practical study of case strength, vibration tolerance, and shock loading. TBH I think most Jeep transfer cases blow up from driveline vibes and physical impact or other forces that aren't part of the driveline. In that respect the NP242 and NP231 in XJs are pretty much identical.

 

I run the 242 HD with larger chain. re-manufactured from Man-Trans. Jeep is set up for Trail/Expedition and 'Joyrides' where it is thoroughly abused.

"The rating for the 242 is from 4 Full-Time. Should be higher in other settings" from 'Novak'

 

I've had 'em both and abused them both for the most part the same...

My next build will have another 231 (although it will be built specifically for snow wheelin) simply due to the 2wd-Low option...

Unless I buy a 4spd Atlas

 

2-low is a very valid point......

 

My command trac (231) equipped xj does not have 2wd lo. My old 70's c10 chevy did but I think that was a 203 or something like that. Also, does the 242 have the vc (viscous coupling) like the quadratrac jeeps do?

 

The NP231 was never offered with 2LO from the factory. To get this in a Jeep you need to install a kit with an extra shift position: http://www.teraflex.biz/2wd-low-range-kit.html

The NP242 uses a gear differential internally. it's the NP249 used in Grand Cherokees that has the garbage viscous coupling.

 

whoops...

 

Yeah I didn't make that very clear... Like Salad said..

Most people LOVE this "aftermarket" option. Runs about $250.. for a few machined dinky parts

Biggest benefit is summertime wheeling when traction is good for those who run front lockers(no selectable).. takes a huge load off steering duties... also Pivoting on tight sloppy trails are a few.

 

I run 2-Lo in the 242 to smoke old tires until they pop.

 

How do you get 2 lo? remove the front driveshaft?

 

Broke the front axle shaft on his last burnout lol

 

You got it..
Or use 4 of the small spare tires and they all go up in smoke. Or at least 3 of them (locked in rear).