No idea, I haven't run it at all. I was just pointing out that it was an optional gear that was even chosen by some folks. The truck did have a Banks turbo kit on it when I got it as well.

 

oh okay .. well if u git'er goin letme know ..

if i was looking for a 2wd - primarily - highway vehicle - i would think that would be a good setup ..

though a test drive would be in order to see how it does ..

 

+1 on 3.55s. Presumably you have 4.10s now? (Should have mentioned in opening post...) 4.10 -> 3.73 isn't enough of a gain to be worth the effort. And the truck never came with 3.73s, so it'd be hard to find a set.

To install an E4OD, you'd need the TCM and all the wiring as well, and the TPS on injection pump, etc. Not an elementary job. If you're willing to shift, a ZF5 swap might actually be less work.

 

You can get gears for any Ford axle in a wide range of ratios. Assuming it's a 10.25, you can get 3.55, 3.73, 4.10, 4.30, 4.56, 4.88, 5.13 and 5.38.
Being a 4x4, that's two gear sets to change, and the rear at the very least must be new. If you try to install used gears and don't exactly match the pattern, the gears will grind themselves apart in a very short time. It's not as critical in the front on a truck with locking hubs, but not something I would do lightly. You can also swap the entire axle assembly, but chances are very good you will not find a D60 front end from a Ford with anything other than 4.10 gears.

 

A zf5 swap would probably be a little easier and cost less, but if you want to stay automatic the e4od swap doesn't seem that bad. Instead of the stock TCM and all the wiring I would go with a stand alone controller. A lot less inputs needed for it to function and a lot more control over the transmissions behavior.