I've got an '04 4x4 SE CC (built in Oct '03 - 1st Titan in Houston). It's in the shop due to broken pinion and ring teeth and has damaged the rear diff. carrier and gears. I want to replace the 2.937 (99% positive it is based on CC29 on axle and from reading other threads) with 3.73 gears from Richmond gear and eaton truetrac. I was told by 2 4x4 shops that I can simply disconnect the 4x4 switch or make sure the switch stays in 2wd mode and it won't do any harm. Is this true? I want to make sure I can keep the 2.937 front until I can afford to swap it later. Or, must I disconnect the front drive shaft to prevent any transfer case damage?
MidnytTitan
I have 2.94 gears in the front and 3.4 gears in the back. Waiting for my buddy to swap 3.4 gears into the updated front diff. I don't have any issues as long as I don't use 4 wheel drive.
There have been some posts that front drive shaft rotation drives a lube pump in the transfer case.
http://www.titantalk.com/forums/tit...ms/titan-general-discussion/127717-safe-drive-4x4-front-driveshaft-removed.html
The 2004 service manual references an oil pump assembly on the main shaft in the transfer case.
http://www.titantalk.com/forums/tit...ms/titan-general-discussion/127717-safe-drive-4x4-front-driveshaft-removed.html
The 2004 service manual references an oil pump assembly on the main shaft in the transfer case.
As long as the transfer case doesn't engage the front drive shaft, you'll be fine... IMO, The easiest route to prevent any "oops" would be to just simply remove both front axle halfshafts... until at such time you have proper matching gears up front... at least, that's what I would do if I was in your predicament... 
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