NegraRCSB2X4auto

iTrader: (15)

I've redone my rearend 4 times already but i'm still getting a whine in my 8.6 rear end i went from 3.42 to 3.90. Can anyone tell me howmuch shim i should go with. I think everyway i go will make it whine but.

BLACKND

iTrader: (5)

My Richmond 3.90's howled like a wolf at about 55-65 MPH. Just get used to it. The Richmonds are prone to whining a bit. I know others have said their Richmonds didn't, but most do.

NegraRCSB2X4auto

iTrader: (15)

so your saying find where the gear is touching right in all places and just deal with the whine.

BigCountryx

iTrader: (3)

I've heard other 3.90's whine like a sob before with a perfect pattern. I also heard that any ratio other than factory ratios (3.73, 4.10, 4.56, etc) have a high potential to howl. No idea why that is, but from what I have seen, it may be true.

rubrhammer

iTrader: (3)

How much backlash? Is it possible to have the pattern correct but still too much backlash? I was pricing those same gears today with the intention of putting them in my daily driver. Now I may rethink and go with the Yukon gears.

Grumpy5.3

iTrader: (14)

richmonds will whine one way or the other, I have mine setup perfect, backlash is dead nuts, pattern is perfect and I still have a whine

Jeff Alexander

has anyone tried the motive gears. do they wine? I going to go with the new 4.30

rubrhammer

iTrader: (3)

How about the Yukon gears. Any reports of whine with them? They are real close in price.

Phantom

iTrader: (16)

I'm getting gear motive 4.10's with a trutrac put in mine tomorrow...dirt_track_racer_81 has them and likes them and thats mainly what they install at the shop he works at...No whine

BLACKND

iTrader: (5)

I know mine was done by a shop, so i couldn't say what the backlash was set at, but it was a good shop that I trust. They even want back into it after the initial test drive just to check that everything was set right because the whine.