chevyrunner

iTrader: (4)

i got a f body camaro with a ms3 cam, heads, and 373s right now....the whine from the rear is annoying me so im going to to swap out the posi unit and change the gears. i love the 373s but would i bet better off with the 411s? i either run a MT/16 inch et street or a 15 or 16 inch MT Drag radial..... since the cam is a top end cam should i stay with the 37s or would i gain anything from going to the 411s?

SMOKNSS

iTrader: (3)

http://www.hotrodpitstop.com/tool.php

Since you left out alot of information, here is a calculator for you. You can thank me later.

chevyrunner

iTrader: (4)

what other information do you need to know... i have no idea what the redlines are currently.. whatever the max redline is with a ms3 cam is .... the car is used for racing only not daily driver

z28newbie

hmmmmmm

Dave_the_SS

iTrader: (27)

how tall of a tire are you running ? 26" -28" etc is your car an A4 or M6.....

redline is what ever the cams is?? wth are you talking about. how bout you take it out and run it and tell us what it is.

z28newbie

I'd say 411

LS1T56FTW

iTrader: (3)

Do you do a lot of track racing or highway racing? With a 26" tire I would do the following:

Highway race: 3.73 gears
Track (dig) racing: 4.10 gears

SSRed2k2

iTrader: (6)

The whine will still be there no matter what gear you are running if you have a 10 bolt. It probably isnt as bad as it sounds but you have a torque arm that is acting like a tuning fork and amplifying the noise. I have had VERY good luck in the past with the OEM manufactured gear sets and noise. The aftermarkets (Richmond, Motive) are more geared toward strength for their specific application. If you have a 10 bolt leave the 3:73 in place and save up for a larger rear.
<----Im watering my money tree for a rear right now.

Dickie-311

iTrader: (1)

Stick cah 4.30's auto 3.90's

Raoul-Duke

iTrader: (6)

Leave the 3.73s, get the 4.11s when you get the bigger rear. ***** going to whine no matter what.