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

Eaton Posi Install

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Old 04-20-2016, 08:34 PM
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Car: 1984 Trans Am WS6
Engine: LG4
Transmission: T56
Axle/Gears: 3.23 LSD
Eaton Posi Install

The Auburn in my '84 is toast and has developed the telltale side-to-side axle play and peg legs around corners now. The car is just going to be a fun street car and will see some autocross and drifting, so I didn't see a need to upgrade axles, and the stock 3.23 gears seem to be a decent compromise for highway use and performance.

My questions:
-All of the threads I'm seeing involve replacing axles and ring-and -pinions. At 107k hard street miles behind an auto and LG4, would wear on these items justify replacement?
-Do I need the full install kit to just have the diff replaced? I heard that axle bearings and diff cover are a good idea, so I'll do those. Anything else while it's apart?
-Does the 26 spline Eaton posi use the same bearings as stock?

I don't want to cut any corners in setting up a good rear end, but I'm also not launching on Mickey's and don't want to put crazy money in a 10 bolt or drop the cash on a big heavy 9".
Old 04-21-2016, 07:20 AM
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Re: Eaton Posi Install

http://www.nastyz28.com/forum/showth...t=install+posi

I would recommend the Eaton Truetrac instead of the Eaton Posi for what you ware wanting to do.

Last edited by big gear head; 04-21-2016 at 07:26 AM.
Old 04-24-2016, 09:57 PM
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Car: 1987 pontiac firebird
Engine: sbc 350
Transmission: TKO 600 5 speed
Axle/Gears: 323 posi/disc from 86 gta
Re: Eaton Posi Install

I am changing the ring and pinion gears in a used 10bolt.Are the threads on the ring gear bolts regular thread or reverse thread?
Old 04-25-2016, 07:14 AM
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Re: Eaton Posi Install

Originally Posted by 230 firebird
I am changing the ring and pinion gears in a used 10bolt.Are the threads on the ring gear bolts regular thread or reverse thread?
Left hand thread.
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