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Stock 10 Bolt

This is a discussion on Stock 10 Bolt within the Firebird / WS6 forums, part of the Vehicle Specific category; I have a stock rear end with 3.73 gears in it. I hear alot about people always ruining their rear ...

  1. #1
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    Navy Blue Metallic
    1998 Trans Am

    Stock 10 Bolt

    I have a stock rear end with 3.73 gears in it. I hear alot about people always ruining their rear ends or blowing them etc. I have 47,000 original miles on mine. I would like to know what causes them to break, what happens when it does ( noise/feel wise) , how much it is to fix, etc. I also notice when im just cruising at like 45 that it sort of wines when i let off the gas but if i give it gas perfectly wheres its not slowing down or speeding up it doesnt make noise, but the funny thing is when its stopeed i kinda still hear it.

  2. #2
    Senior Member Shermanator86's Avatar
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    Pewter
    2001 Camaro SS hard top

    LT1howto.com :: F-Body DIY Ford 9" Rear End Buildup
    this article explains things pretty well i thought

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    Member RedSuperSport's Avatar
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    Thank you that was extremely helpful to me also, I know the route I'm going to go

    Sent from my DROIDX using Tapatalk

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    Moderator 35th-ANV-SS's Avatar
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    There is a sticky in the drive-train section of this site: When will my 10 bolt break?

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    Member jetaws6's Avatar
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    if your a auto you dont have much to worry about. If your an m6 dont put sticky tires on it.

  6. #6
    If you have a manual and you beat on it you should have money saved up for a 9". If your auto you dont have to worry about it "AS MUCH" as you do with a manual but you still cant count on it. Iv had 3 ls1s and the first one was totally bone stock. My rear twisted off the car from a dead stop on street tires.

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    Moderator 35th-ANV-SS's Avatar
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    A used 10 bolt can be found anywhere from $200-$450 to answer your replacement cost question.

    Not too many people ever suggest putting money into the 10-bolt.

  8. #8
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    Navy Blue Metallic
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    Ok, well i have an auto so i guess i feel a little relieved. Why does the manuals have that much more load on them?

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    Senior Member justinmc978's Avatar
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    sold: 1999 firebird
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    Quote Originally Posted by 90ARAPAJ View Post
    I have a stock rear end with 3.73 gears in it. I hear alot about people always ruining their rear ends or blowing them etc. I have 47,000 original miles on mine. I would like to know what causes them to break, what happens when it does ( noise/feel wise) , how much it is to fix, etc. I also notice when im just cruising at like 45 that it sort of wines when i let off the gas but if i give it gas perfectly wheres its not slowing down or speeding up it doesnt make noise, but the funny thing is when its stopeed i kinda still hear it.
    then it's obviously not your rear end.

  10. #10
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    Navy Blue Metallic
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    Quote Originally Posted by justinmc978 View Post
    then it's obviously not your rear end.
    well yea but i thought you guys could point that out while your at it..

  11. #11
    Member godless-phoenix's Avatar
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    Blackened fire chicken
    2000 Pontiac Trans Am WS6

    get a mac or t/a "rear end girdle" they're like around $150. after i had my 10 bolt rebuilt, ive had no problems with it since then after putting on the "girdle". seems to hold up well especially since i have an auto just like you. hope this helps...

  12. #12
    expensive tires az gt eater's Avatar
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    How much horsepower are you putting to it?

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    Moderator 35th-ANV-SS's Avatar
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    Some here are running 10's without an issue with the 10 bolt. Others have gone through numerous 10 bolts with stock power; both manuals and auto's.

    However you look at it, the 10 bolt is a ticking time bomb waiting to go off. Manuals create more "shock" into the rear differential and that is why the rear end usually breaks on a M6 before an auto.

  14. #14
    Senior Member justinmc978's Avatar
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    sold: 1999 firebird
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    Quote Originally Posted by az gt eater View Post
    How much horsepower are you putting to it?
    the car is basically stock with a 100 shot of n2o

  15. #15
    Member jetaws6's Avatar
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    Quote Originally Posted by 90ARAPAJ View Post
    Ok, well i have an auto so i guess i feel a little relieved. Why does the manuals have that much more load on them?
    More harsh on the drivetrain between shifts.

  16. #16
    None Shall Pass Knight's Avatar
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    If you're stopped, and still hear noise, it would be something related to the engine or tranny. Could be many things, Would need more info to help diagnose.

    As for the symptoms of a rear end dying, normally it's fairly obvious. As Jon stated, it's only a matter of time. A 9" or 12 bolt is the most common solution. I run a 9", as I kept tearing teeth off the ring and pinion gears on the stock 10 bolt.

  17. #17
    Senior Member TLS_Addict's Avatar
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    If I keep my car my 10-bolt is going in the for sale section.

  18. #18
    Senior Member Lunatikgixxer's Avatar
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    Bat mobile black
    2000 Trans am WS6 M6

    The reason the 10 bolts are no good is because they usually twist when under a load with sticky tires on them correct?? They dont actually break do they?

  19. #19
    Senior Member Lunatikgixxer's Avatar
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    Bat mobile black
    2000 Trans am WS6 M6

    Quote Originally Posted by 90ARAPAJ View Post
    Ok, well i have an auto so i guess i feel a little relieved. Why does the manuals have that much more load on them?
    They mainly break on launches at the track with sticky tires, or on the street im assuming... I knew a guy who blew his out when he downshifted to 2nd gear and mashed on it going about 60... but he was putting out over 450 wheel

  20. #20
    Senior Member wileyCoyote's Avatar
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    1999 TransAm

    stock 10-bolt also a notorious "leaker"...

    ...as the others said the M6 tends to be harder on it, i suppose by virtue of engage/disengage the clutch clycles, but i try and go easy w/ the clutch, to minimize the "shock" and "clunk"

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