08 dodge ram 1500,106,897miles,has loud whinging noise faster u go louder it gets,jack up rear run it ,no sound,checked u joints,checked fluid,gets so loud u can`t talk normal at high speedut like i said,we jacked it up an ran it an no noise,any idea`s ,thinking pinion bearings or wheel bearing ,same tires for 5 years,

 

My guess would be axle bearing...

 

If it's a 9 1/4" they're prone to crush sleeve collapse and loose front pinion bearing. Grab the yoke and push up and down hard, that will show you.

 

Sounds like the belts. Strain on the crank when drive wheels are sitting on the ground and the belts are slipping. But when you lift the drive wheels the engine has less strain and the crank doesn't work as hard so the belts dont slip

 

maybe load it with an application of brake, or check the front wheel bearings