Ellesshoe

I know this question has probably been asked several times, but I searched several different ways and I can't seem to find a definitive answer. The setup is a 4th gen SS camaro convertible with a 383 stroker making around 465hp at the rear wheels with a m6 and 12 bolt moser with 3.73 gears. Cruising between 60 and 75ish under a load the rear end whines a good bit. Drop it into neutral and the whine goes away but sometimes there is a chatter coming from the rear. If noise is the only issue I'm not to concerned about it. I just want to make sure there isn't any damage being done. Any help or comments are appreciated.

01ssreda4

iTrader: (96)

Chatter when? What kind of posi is in the car?

Ellesshoe

I've noticed the chatter at various speeds when I have the clutch disengaged (pedal being pressed) or coasting in neutral. Trying to find out what posi unit is installed. I just bought the car a week ago.

Jimmyz

iTrader: (3)

It has an Eaton Posi. Whine is probably a back lash tip-in issue. They all whine if they've been tracked and I know this car has seen some track time.

01ssreda4

iTrader: (96)

May need a gear oil refresh and some new posi additive.

Bob@BruteSpeed

iTrader: (16)

http://shop.brutespeed.com/Brute-Spe...nformation.htm

I have a write-up at the above link about why 12 bolts whine. The chatter could be from the posi, it might need more additive, or is could be that the torque arm bolts at the rear have loosened up. I'd check to see if they are tight, as I have seen when they are loose, the rear will make chatter sounds when turning. Bob