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

4th gen rear swap today :)

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Old Aug 2, 2015 | 02:53 PM
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4th gen rear swap today :)

Picked up a 96 z28 rear end yesterday. Rpo g80 / gu2

So 2.73 gears and an Auburn LDS

Got to work first thing in the morning and had it in before lunch.

Now just need some better rims


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Old Aug 2, 2015 | 02:55 PM
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From: South TX
Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

sorry for messed up pics. probably shouldn't has started to drink till afterward
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Old Aug 4, 2015 | 07:06 AM
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UltRoadWarrior9's Avatar
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From: NC
Car: 1986 IROC Z-28
Engine: 383 Gen I SBC 11:1
Transmission: Rebuilt TH700R4 for 500+HP
Axle/Gears: 4th Gen 10 bolt Eaton Truetrac 3.23
Re: 4th gen rear swap today :)

Nice! I remember how excited I was when I put a 2002 Z28 axle with 3.23 gears. It too had Auburn LSD. I'm upgrading the Auburn LSD to a Eaton TrueTrac. Also, I'm thinking of going up to 3.73 gears. You might want to lose that Auburn unit too, or maybe burn it out first? Lots of info on TGO about how the Auburn unit is not rebuildable.

Your tires sticking out about another 5/8"???
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Old Aug 4, 2015 | 08:06 AM
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From: South TX
Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

Will swap the auburn when it finally gives out but is holding strong for now. and my tires stick out crazy far now. I picked up some z06 rims but they need tires yet. when I get some tires on there I will post a pic
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Old Aug 5, 2015 | 04:49 PM
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Re: 4th gen rear swap today :)

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Old Aug 6, 2015 | 08:00 AM
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Re: 4th gen rear swap today :)

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Old Aug 6, 2015 | 11:43 AM
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Re: 4th gen rear swap today :)

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Old Aug 6, 2015 | 02:18 PM
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Re: 4th gen rear swap today :)

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Old Aug 6, 2015 | 04:24 PM
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Car: 1988 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH700R4
Axle/Gears: 3.27 9-bolt w/ Torsen LSD
Re: 4th gen rear swap today :)

Love those burnout tracks! Great job with the swap!
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Old Aug 6, 2015 | 05:02 PM
  #10  
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From: South TX
Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

Thanks! I wasn't sure if it would spin those big nitto's. I happy wit how it turned out and would recommend the swap.
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Old Oct 4, 2015 | 03:08 PM
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morrow's Avatar
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From: simi valley, southern cali
Car: 92 Camaro Rs.R
Transmission: wc t-5
Axle/Gears: 3.42
Re: 4th gen rear swap today :)

How much room between the fender lip and the tire do you have now
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Old Oct 5, 2015 | 07:42 AM
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Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

Im still on stock springs so about 3"
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Old Oct 5, 2015 | 09:23 AM
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morrow's Avatar
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Car: 92 Camaro Rs.R
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Re: 4th gen rear swap today :)

I mean side wall to inside of the fender lip
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Old Oct 5, 2015 | 12:19 PM
  #14  
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Transmission: 700r
Re: 4th gen rear swap today :)

Oh if it was lowered im sure it would hit. It looks about flush with tire.
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Old Feb 21, 2016 | 09:30 AM
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Re: 4th gen rear swap today :)

Looks nice
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Old Mar 1, 2016 | 06:57 PM
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Re: 4th gen rear swap today :)

Originally Posted by IROCgiraffe
Looks nice
Hey did you use the stock lca or adjustables? Did you have to aling it after the swap? I just did a similar swap but my right wheel is toe in I don't know why
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Old Mar 1, 2016 | 07:05 PM
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Car: 1986 IROC Z-28
Engine: 383 Gen I SBC 11:1
Transmission: Rebuilt TH700R4 for 500+HP
Axle/Gears: 4th Gen 10 bolt Eaton Truetrac 3.23
Re: 4th gen rear swap today :)

Try adjustable panhard bar before adjustable LCA's... I remember similar issues after my 4th gen diff swap. It's trial and error to get the centering right depending on tire sizes, suspension parts, bushing type, etc.
I remember trying to space the tires to the body equally while adjusting the panhard bar, and it was still off center. Good luck.

Last edited by UltRoadWarrior9; Mar 1, 2016 at 07:22 PM.
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Old Mar 2, 2016 | 07:46 AM
  #18  
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From: South TX
Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

Originally Posted by 729rs
Hey did you use the stock lca or adjustables? Did you have to aling it after the swap? I just did a similar swap but my right wheel is toe in I don't know why
I used the lca n ph bar from the 4th gen. and I did do an alignment but that's what I do for my job so was no biggie.
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Old Mar 2, 2016 | 09:17 AM
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Re: 4th gen rear swap today :)

The 4th gen car I took it out of was wrecked from that side I'm now thinking that the diferential might be bent cuz I measure both sides of the wheels and it's about 5\8 difference
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Old Mar 2, 2016 | 09:18 AM
  #20  
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Car: 92 RS
Engine: Sbc With h/c/i/e holly4150
Transmission: 700r
Re: 4th gen rear swap today :)

Originally Posted by 729rs
The 4th gen car I took it out of was wrecked from that side I'm now thinking that the diferential might be bent cuz I measure both sides of the wheels and it's about 5\8 difference
sin the wheel and see if it change. the axle shaft may only be bent not the entire housing.
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