HOW MUCH for NEW GEARS INSTALLED?

Guys.........

I just got an estimate for a set of Yukon 3.23's installed in my 489 case and properly set-up, "in the car".......My gears are just too noisy for words.....as a matter of fact, I have words with 'em every time I take the car out of the driveway.

They quoted me $850. in the car......(specialty shop...drivelines only)......I nearly fell outa' my chair........

Is that a reasonable estimate ???
It very well could be reasonable. It depends on what it includes. To give an estimate over the phone puts the shop in a position where they almost have to give a high end estimate. Remember they have to guarantee their work so corners can't be cut. I refuse to give estimates until I can see the car & make a diagnosis or evaluation 1st.

Let's look at it for a miniute.

R&R differential housing, inspect it for damage, are they replacing the diff bearings & races- added cost(remember the noise issue?- probably a good idea), replace pinion bearing & seal & related hardware, inspect differential(posi unit) for wear, install & set up ring & pinion, inspect axle bearings, replace axle seals & adjust rear brakes, replace differential fluid(synthetic maybe?), Road test to confirm repairs & provide a guarantee.

So you see what one guy may have paid to have a set of gears slapped in by some guy who does gears may not be fair to compare to what a professional doing an overhaul may need to charge. My point is repairs to anything isn't cheap if you need it done right. Expertise comes at a price too. You get what you pay for. CROCK Auto may sell parts cheap, but are they really professional grade? Not likely! It's apples to oranges. I'd suggest finding out what exactly is being quoted in the estimate then make comparsions. A higher price than expected doesn't necessarily mean a rip-off.