Silvery sparkles and some gray sludge can be expected during break-in.

All i'm saying is that the whine won't go away. You can hope all you want...lol Your rearend isn't gonna go bad anytime soon unless it's severly whining and that's been discussed already.
They are just trying to push you away because the further away from install it gets, the easier it is for them to say no and you too say that it's too late.

 

I don't think it's gonna go away I just hope it doesn't get worse for both my sake and the shop's. I really don't have time right now to deal w/ another break in period and dicking around w/ them to get them to cover the cost of the replacement.

 

I am with Dirtydog on his statement about break-in and gear whine. A whine is caused by a less than correct tooth pattern. Properly setup gear sets on modern vehicles should not whine. Sparkles (metal flecks) should not be in the oil. The rear housing should not be contaminated with anything from the install proccess. If it is than something wasn't done right during the install. I have installed several gear sets over the years and have heat cycled them after install mostly checking to see if I got everything right or not. Keeping track of the rear end temperature will tell you if the gears have the proper clearance or not. I was planning on having a shop do my upcoming gear change, but after following this thread I may have to throw my old bones under the truck one more time. With all the new vehicles hitting the road I have yet to hear a dealer say "Oh don't forget to break-in the rear gears" and that whine will go away...
I believe a gear change provides one of best performance upgrade for the money.
Good luck..

 

I would have definitely done it myself if I had the tools and experience required, that sounds like your best bet since you know how to do it. Any idea what kind of temps the differential should be at after driving, and like how long or fast of a drive should I do before checking it? It sounds like a good way to see if they really screwed me or only had it off a little before any catastrophic failure.

 

I would take it back. Properly setup gears should not whine, it's easy to put some gear marking compound on them and look at the pattern.

 

Well I took the truck to the shop today to have some tires swapped over to a different set of wheels and had them change the break in oil and check everything over. They said it all looked good and checked the backlash which is now at .007. The whine is still there from 45-55 but I can live w/ it as it's not that loud. There are a lot of guys w/ motives over on dodge talk that have said their gears also whine a little at certain speeds so I think it will be ok.

One thing I have noticed that is different since the gear change is there is a little bit of clunk when I shift into first (or any other gear) after coming to a complete stop. My truck only has 30k miles so I don't think I've worn anything out that would cause this, so what could it be?

 

Check your u joints make sure they are tight.

 

Will do I'll check them tomorrow.