i have a 89 irocz with 373 gear and here recently it just started whining real loud at all speeds but gets worse faster u go it has brand new carrier bearings on it and it didnt stop the whining my gears teeth are very shiny anybody have any ideas i dont wanna spend no more money and it not fix it

 

Well, it's probably not the carrier bearings...

Probably either the pinion bearings or the gears. Might not have got the carrier put back in right (shims) when replacing the bearings. It's dark under there though, and you don't have one of those clear covers on it; so I can't see into it well enough right now to tell what whoever did wrong to it.

 

Use a period every now and then. Makes it much easier to read.

I'm assuming that the noise wasn't there after the gears were installed and the noise just started. Check the pinion nut to be sure it's still tight. These rear ends are known for the pinion nut backing off. You will have to remove the drive shaft to check it. Put a torque wrench on it and see if it will take 125 foot pounds without moving. If it's tight then hold the yoke and see if you can move it up and down or in and out. If you get ANY movement at all other than rotation then you have a pinion bearing problem. Even if it doesn't have any movement you could still have a bad pinion bearing.