I've got a 1999 4x4 and I'm considering swapping diff gears from 3.55 to 4.10 because I think it will make the truck more driveable and have more torque where it's needed. With the 4.6 and 5-speed the 3.55 just don't seem like the best fit.

If I'm having the gears installed at a good shop, should I go ahead and replace all diff and axle bearings just because they're in there, or would it not be worth it in a 90,000 mile truck? I was thinking rear diff bearings but my mind is telling me everything else could probably be left alone?

Any experiences or recommendations?

Thanks

 

Id replace everything just for piece of mind. But that's just one mans opinion. I don't think your gonna get a definate yes or no answer here. Its all about personal preference and money you wanna spend