First off welcome to the forum @Jeepnovice;I own a 2006 commander with a 3.7 v6. The vehicle came with a NV145 transfer case. I am looking to swap out the transfer case to a part time 4wd unit. What unit is a compatible swap?
The 3.7L engine does not come with the 545RFE Transmission, that transmission is only used for the 8 cylinder Commander power-trains, which is either the 4.7L or 5.7L V-8.sounds like a neat problem.
there are options out there for the 5speed 545rfe:
545rfe transmission x-fer case options? - Pirate4x4.Com : 4x4 and Off-Road Forum
Which trans do you have? W5A580? Maybe find out if jeep wranglers of same era had the your trans and engine combo and go from there...
Grand Cherokees of the same model years (2006-2010) use the same exact transfer cases & 4WD systems as Commanders, so you would still have the same exact problem unless you tried to use one out of an older Grand Cherokee maybe pre-2005.My bad, it is an nv140. I was hoping that a transfer case from a grand cherokee or similar model would swap with minor modifications. Oh well, I guess I had better buy stock in oil wells. lol. Thank You for your assistance.
I'm not so convinced....seems to me if this was doable, it would have been done by someone else by now and I haven't heard of such a thing in the 3 years I've been here.anything's possible...check with advance adapters or novak conversions for xfer case adapters.
i would start with jeep wranglers that use the nag1 and go from there.
post back on what you find...
This doesn't sound like an upgrade/swap that's easy on the wallet - which what a lot of members here are looking for.There are no electronics on the 4wd side of the 3.7 systems. The traction control is driven by the ABS module and has nothing to do with the the 4wd.
You would have to find a transfer case with the same bolt pattern that is manually shifted. Someone suggested one off the wrangler which is probably your best bet. You would need custom driveshafts though and a place to put the shifter.
Anything is possible if you're willing to open up your wallet & spend the cash.definitely sounds like a lot of work...
i did some research that i would have never done without this thread. apparently the nag1 was used in the srt8 grands. i always thought the 545 was a stronger transmission since it was used in the ram trucks. but from reading about people running 11s twin turbo rams (lol), it looks that the nag can be built up to be stronger.
ram trucks had part time xfer cases too. after thance's reply, sounds like you would need to not only swap out xfer case but also computers and some electronics. that could get out of hand very quick!
thinking outside the box is part of how we evolve. just because no one here has done it, means there's opportunity lol.
There are a few of us around here that will spend whatever it takes, to get the results we want when customizing our XK's - but we are the exceptions - not the rule.looking at some of the things done to commanders on this site, not sure of applying the definition of easy on the wallet when you look at lifts, tires, wheels, exhaust, etc. upgraded on something that may never need it.
hopefully the op will come back and at least say yay or nay on what was learned.