Jeffs99SS

Okay guys, I'm stumped. Yesterday I installed a TA cover, carrier stud kit, and ARP wheel studs in my rearend. It's the original 10-bolt rear with 80k miles, 3.73's, and relatively new bearings. Now I have a noise that sounds very similar to the "baseball card in bicycle spokes" noise. It only happens above 35 mph on the street. With the car lifted up on jack stands, and running the wheels above 35 mph, the noise is not there.

I'm stuck. Do any of you rearend experts have any ideas on what I should be checking for?

Thanks for any help

My1st Truck

iTrader: (8)

sounds like a pinion.