Transmissions and Drivetrain Need help with your trans? Problems with your axle?

2.73's to 3.42's

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Old Jan 4, 2001 | 12:01 AM
  #1  
pimpintheRS's Avatar
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2.73's to 3.42's

what do i need to know before i do this i am a beginner but i want more punch to my car this spring i am going to race a 90t/a and i have to put lil goodies in while i can..help me out
thanks
Shawn
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Old Jan 4, 2001 | 12:53 AM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Want posi too? Head over to www.slponline.com and buy their Take-Off Torsen posi for $99. You can use it if your RS is a 90-92. Then go to the classifieds section of www.ls1.com or www.camaroz28.com and find someone selling their stock 3.42 gears. Lastly you'll need the speedo gears for 3.42 rear axle, which for an automatic are a 15 tooth drive gear, and a 41 tooth driven gear. Then you need to find a good shop to install this for you, because rear end work requires specialized tools and experience. Good luck!

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Old Jan 4, 2001 | 01:36 AM
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thanks anyone else have anything to say?
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Old Jan 4, 2001 | 01:46 AM
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Im Doin the Same Thing, Slowly But surely.
I bought used 3.42's for 50 bucks, they are in the Mail now.

As soon as I get paid agian, Im going to Pick up a Pair Of 28 spline axles ( something You wont have to worry about if Yours is a 90-92 ) And The Posi unit itself.

Then Sometime In Febuary, Ill be able to have someone put em Together



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Old Jan 4, 2001 | 01:51 AM
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kevin you got 3.42's that you dont need seen them on another post just wondering how much and the wear and tear i got the stock rear so tell me if they'll work...
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Old Jan 4, 2001 | 01:53 AM
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my rs is a 91
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Old Jan 4, 2001 | 09:11 AM
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Car: 1986 Firebird
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As to what's involved, if you're a beginner, you should take it to a shop, and have them do it. There's stuff involved like backlash and preload and more that requires special tools, plus, one mess-up, and your gears are toast.


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Old Jan 4, 2001 | 12:10 PM
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Originally posted by pimpintheRS:
kevin you got 3.42's that you dont need seen them on another post just wondering how much and the wear and tear i got the stock rear so tell me if they'll work...
No, I dont. It was Ede. He said he had some for me, but I have a 9-bolt with 3.45's, I cant use them, nor do I need them.

[This message has been edited by Kevin91Z (edited January 04, 2001).]
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