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Humvees are independent suspension, diff bolts to the frame. Disconnect the half shafts, driveshaft and the supports for the diff. Drop the thing out. I think I'll remove the diff and dissasemble it for my local shop then they can do the precision work and I'll reinstall it. Probably much...

The reason I am skeptical is because I have torn about geared hubs before on a whim and it's a really simple thing to do. Only precision part is shimming a cover plate.

I thought changing the ratio was just installing new ring and pinion gears? What special things need to be done that would be worth $1600 of work. That sounds like a rip off personally. I spent $2500 on my 4l80 conversion.

I already have a 4l80. That conversion have a ~800 rpm reduction. 2.56 gears would give me a 200 rpm reduction from what I've heard. 1/4 of the rpm drop for about a 1/12th of the cost, worth it for me, personally. 200 rpm reduction is the difference between 55 and 60, and auditory-wise its...

Thats the reason I'm looking into the diff regearing. Since I will be swaping in a turbo I thought I wouldn't miss the torque off road and get a little more reduction in rpms for highway cruising.

Technically? Do 2.56 diffs have any other different parts compared to the 2.73? I assumed they were identical? Extra torque from the turbo engine? Or...?

What is required to change a 2.73 differential to a 2.56 geared one? Can I throw the ring and pinion of a 2.56 in it and be fine or do I need more?