noise in rear
 

I have a 2000 Z28 with 3.73 gears. The gears were just put in but even before they were in i was hearing a loud humming noise coming from the rear when i would moderatly accelerate and when i would just let off the gas and let my car roll at the speed i was originally going. Some people told me its a pinion bearing but i just got all that replaced when i put the 3.73 gears in. Any clue to what it might be would be helpful. Thanks guys.

Could be gear lash...

What weight fluid are you running?

im not sure actually...

How high pitched is the noise?

well sometimes i can hear it over the radio, and if the radio isnt on at all its pretty loud.

gear wine? Just turn the radio up :lol:

yea thats what i usually do i just wanna make sure its nothing major...

i could be wrong, but i've heard Richmond gears are "noisy" i have 3.73 richmonds in mine and they were noisy after the install, but i've just got used to it.. and this was 6 years ago. if they ween't rchmond then maybe u have an issue where they need to be shimmed/adjusted . check the wear pattern with that special paint if the whine is that bad. or it could be a bad posi unit?

they are richmond gears but i also had this noise before i put the gears in so its not that.

Its a 10 bolt!! nuff said!