96 5.9 2wd , rear end hums, exspecially around 50mph, anything I can try, I am a new dodge owner,thanks, Lee

 

Sounds like you may need to service your rear end oil. Perhaps a good time to install a Mag-Hytec cover while you're at it? Once installed, you can then remove a screw at the bottom to easily drain the fluid instead of having to remove the whole cover.

 

Mayfair, you just love showin your rear end off .
hahaha

lgower, I wonder too if you have serviced the rear end lately.
Remember if you have the limited slip rear end you have to put an additive in along with the gear oil.
Hope this helps.

 

thats a pretty sweet looking cover, how much and where did you get that?

 

If it is already humming at 50 mph
the pinion bearing races are probably irreverseably pitted
and there is no option but to rebuild
the bearings and oil seal on the pinion shaft
of the 9.25.

Make sure the big pre-load nut is torqued to the right load
using the proceedure where the drag of the gears is measured with an inch-pound torque wrench,
and that this big nut is then torqued with a massive foot-lb torque wrench, and it is locktited with good quality stuff to hold the nut at torque.