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3.73's in a4 camaro

This is a discussion on 3.73's in a4 camaro within the Automatic Transmission forums, part of the Drivetrain category; i recently had a set of richmond 3.73's installed and now my rear end whines like a banshee after i ...

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    3.73's in a4 camaro

    i recently had a set of richmond 3.73's installed and now my rear end whines like a banshee after i hit about 40mph and only when i have my foot on the gas. when i get to 80 is has this really low rumble like a really fast vibration from my rear end. i have the optional auburn posi in there and it had 2.73's before. did i need to upgrade my carrier or did the guy not put everything in there correctly. i replaced the bearings and everything. i haven't pushed it much past 80mph because the sound gets louder as i accellerate. any suggestions?

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    your parts guy!!! 1fastcamarosss11's Avatar
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    trans am 00 ws6
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    3:73

    take it back, and have it checked out thanks jeremy

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    Story of My Life!! BIG D's SS's Avatar
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    These rearends are famous for making noises, but I would have them check it out just to be safe.

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    The Guy That Put Them In Did It For $180. He Is A Certified Mechanic, But He Didn't Even Know I Needed Limited Slip Additive. I Don't Have A Warranty On The Work And The Guy Is Kinda Dodging Me. Do I Need To Take It To Another Shop Immediately Or Can I Wait For This Guy To Get The Time To Check It Out?

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    Story of My Life!! BIG D's SS's Avatar
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    I would at least take it and let someone look at it. The back lash is probably not set right. You don't want to have a bad wear pattern on your new gears.

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    THAT WOULD SUCK

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    Senior Member Zboner's Avatar
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    did you or he break it in properly??

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    I WENT THROUGH ABOUT 4 OR 5 HEAT CYLES BEFORE I REALLY GOT ON IT. I DON'T KNOW IF THAT'S HOW THEY GET BROKEN IN.

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    Story of My Life!! BIG D's SS's Avatar
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    Break in Hell Drive It Like You Stole it from the get go.

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    I'm A Newbie When It Comes To Mods And On A Limited Budget So I Can't Afford To Break My 10bolt. I Do Want To Get On It But I'm A Little Nervous With All The Noise That Wasn't There Before. I Just Want To Make Sure I Don't F Myself.

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    Retired NOT tired SteveC's Avatar
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    My understanding is that "Richmond" gears create more noise due to the fact that the teeth of the ring and pinion are cut more straight up and down opposed to angled like the stock gears. I have a set of "Timken" gears (3.73's) that are very quiet both at acceleration and deacceleration. The break in proceedure is very important to follow to avoid scalding the gears and proper tooth alignment.

    SteveC

  13. #13
    ls1der
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    wrong end play on pinion bearing? my 2 cents

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    what do i need to do to fix that?

  15. #15
    TheAntiRice
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    take it to ashop and have them adjust the rear end like they said it could be too much play on the p bearing what i would do is take it some where and have them adjust it witch might cost some change but dont beat on the car too much if its set in wrong you could break them

  16. #16
    TNT
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    I had the 2:73 and went to the 3:73 and it does make a little noise but only at 65mph and nothing before or after that. It sounds like they did not set yours up correctly. The mechanic that did mine asked me to buy the stud kit from thunder racing to make it easier to set up and he had done a bunch prior to doing mine. I would get it checked ASAP.

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    Quote Originally Posted by p_funk22
    what do i need to do to fix that?
    Take the car to a shop known for building or modifying cars (not a dealer or a local guy whom does mileage repairs). It won't cost that much to have the clearances & end play checked & re-aligned. Basically, an hour of labor. Probably $75.00 or so which is much less than you will spend to put another rear end in it if there is aproblem. Also, ask them the best proceedure to break it in. This should be done very soon.

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    Tech Junkie hammertime's Avatar
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    Quote Originally Posted by LS1-450
    Take the car to a shop known for building or modifying cars (not a dealer or a local guy whom does mileage repairs). It won't cost that much to have the clearances & end play checked & re-aligned. Basically, an hour of labor. Probably $75.00 or so which is much less than you will spend to put another rear end in it if there is aproblem. Also, ask them the best proceedure to break it in. This should be done very soon.
    Very soon, a wear pattern is established on a new gear set after about 500 miles. Once they've broken in, you are not likely to get the noise to go away, no matter how they are setup.

    Manufacturers will tell you to go 500 miles before running them hard, but the heat cycles are really what you are after.

    Hopefully you get it fixed before its too late!
    Hammer - hammertime.us
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    K&N, SLP Lid, SLP y-pipe, GMMG cat-back, Lou's Short Stick - more to come!

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    It's In The Shop. I Won't Know How Bad I Screwed Myself Until Tomorrow.

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    $300 just to open up the rear end and inspect. not off to a good start.

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