question rear end howl/whin

[twoolley08]

I used to have a whining/howl, usually at around those speeds. Had the entire rear end replaced..Think the gears were shot.

did it stop after they where replaced??

[JoeliusZ28]

stock 3.73

uhhh, no such thing sir

[MP81]

[kammi10]

yeah no such thing as stock 3.73's

[twoolley08]

hmmm well thats wht the vin pulls up at the dealer is a 3.73 rear

[MP81]

How about 3.23...

[my95z28]

No such thing as stock 3.73 gearing in an fbody, but maybe it is a different 10 bolt? Majority of the time gear whine is because the gears are improperly shimmed, therefore not lining up correctly. But this happens right after you install the gears, so I would have to say some sort of a bearing.Maybe the carrier bearings?

[twoolley08]

na notta diff rear end. how can you tell without pullin thie shit apart to tell which gear you have? turn the drive shaft count till one full wheel rotate then divide?

[my95z28]

Yep, it will be very easy. If your car is a manual 6 speed, it has 3.42. If it is an auto, It either has 2.73 or 3.23 gears in it.

[twoolley08]

Yep, it will be very easy. If your car is a manual 6 speed, it has 3.42. If it is an auto, It either has 2.73 or 3.23 gears in it.

hmm maybe the dumb f**k at the dealer ment to say its a 2.73 since i have the a4, ive never liked dealers, always bad experiences there, they never fix anything right

[MP81]

Check your RPO codes...

[twoolley08]

Check your RPO codes...

alright well i found that info, it states its a 3.23 gear. except i found a site that supposably tells you your gear by speed rpm and tire and it says 3.73 sooo im inclinded to think that it has been changed

[MORNINGSTAR2101]

haha wise man must have money to waste unlike i

lol, actually, wise man=joel

[JoeliusZ28]

if you dont trust your RPO codes you can always turn test it: put a mark on the tire and a mark on the driveshaft, the with the car on jacks see how many DS turns it takes to make 1 revolution of the wheel.

Chances are the RPO is correct though.

Also do not judge your gearing by the stock tach. The gauge cluster reads high on the RPMs, so you need a digital tach (or laptop) to determine that accurately.

[meissen]

Sounds like Angie's car. Rear end is stock, 3.8L v6 and her rear end has whined since it was new. We had someone open the rear end and look at it and there were tons of metal shavings all over from the axle bearings not being lined up if I remember correctly.