MasterTomos

iTrader: (15)

do they exist??? Im looking to do 3.73 gears but Ive never seen an fbody that doesn't whine like a banshee with them...

what about GM 3.73 gears, has anyone tried those?

Tx91z28

my stock replacement motive 373's are silent, had them installed by the best axle/gear shop around here and it paid off

DaddySS

Get the AAM 3.73s. They are a different "cut" from the usual aftermarket gears, forgiving set up and quiet as stock - you won't be disappointed.

outkast6991

iTrader: (34)

listen to this guy^^^^^^

tom falco

No gears should WINE when set up correctly. Why would THEY???????????????? Been doing them for 40+ years. They are not geliberately designed to WINE.

DaddySS

You're absolutely right, but some of the after markets tend to be noisier - especially as the ratio goes up, and the 10 bolt does not hold the settings well under load so even if set correctly - a little movement makes them whine. The AAMs are more forgiving on set up and in use.

tom falco

Well lets start over. All ring and pinion sets are checked for contact in the factory on Gleason machines. That is why you get a speck sheet with the gears and that is the contact ares that should be achieved. I really dont understand what you mean by MOVEMENT. The ring gear will have a tendency to push out from torque loads and increase the back lash under heavy load but all final drives do that. I am pushing well over 500 HP to my 4.11 10 BOLT for 3 years now with no problem. When setting up gears they should not make noize. If they do something is not set correctly. I have build litterly hundreds of final drives in my life and i must say they dont WINE. When you say as the ratio goes up they wine what ratios are you talking about? I run a 5.13 HIGH IMPACT gearset on one of my street cars and its pritty quiet. If you are interested in final drive specks and procedures go on randys website and check it out. Believe me 3.73 gears are not big at at ALL. No street gear set should WINE especially 3.73 units they are not that big of a gear. Hope this helps

omcar

iTrader: (10)

My Richmonds were set up correctly and are quiet.

StealthFormula

iTrader: (35)

I have AAM's and they wine a little bit. I had Motive's previously and they were a tad louder yet. I attribute the wine to my installer but with dumped TD's I can no longer hear it anyhow. From what I've seen I'd recommend AAM or GM.

pillarpod

i get my gears put in tomarrow What is the best way to break them in?

SHovV

iTrader: (1)

do burn outs. 6k clutch dumps. drive the hell out of it. hard off the line accelerations. that sort of stuff

MasterTomos

iTrader: (15)

thats interesting, the performance shop around here says theyve done a handful of fbodys and they're all whined like that...wonder how they're setting it up wrong?

tom falco

Always break in gears EASY . They have to mate properly. There should be a speck sheet with them that will tell you how to break them in. I always suggest to my customers to take it easy for like 1500 miles. Once again gears should not wine. You can get all the WINE you need at the liquor STORE. Just a joke that we tell customers when we do a gear SWAP. They always ask if the new gears will wine. Peace Tom

tom falco

TOTALLY correct and Richmond makes a dam good set of gears. I have installed several sets and they are top shelf QUALITY. If a gearset wines it's telling you something is WRONG. Peace Tom

95TransAm_ToM

My 3.73s whine like hell, but so did my stock ones...... How bad can this be, does it mean my rearend is a ticking time bomb??

tom falco

That cant be a good sign. I have a TC that came from the factory with 3.73 gears and my VETTE came with 4.11 and they are as QUIET as a church mouse. Bottom line if they make noize they are not set up RIGHT. Gears were not designed on purpose to make noize. Years ago the gears were straight cut. Talk about NOIZE. Ever hear an old car going down the road. WOW talk about NOIZE. Modern gears should not make noize. If they do something is WRONG.

98(LS2)Z28

Where are you located

1BADTALS1

iTrader: (4)

had my Strange gears put in and did a burnout for 2 blocks when i left the shop.. been 3 years now and they are quiet as the stock gears were.

VincesSS

iTrader: (1)

My 3.73s were quiter than my original 3.42's. I used motive performance gearset.

pillarpod

I just got my car back from the shop and i have QUITE 3.73s