will a 4th gen rear end work in a 3rd gen??
Thread Starter
Junior Member
Joined: Mar 2008
Posts: 6
Likes: 0
From: Grand Ledge MI
Car: 1984 Z28
Engine: Built 305
Transmission: T-5
Axle/Gears: 3:73 Open
will a 4th gen rear end work in a 3rd gen??
I found a great set up that i want for my 84, but its out of a 99, what are the main differences in the rear ends between the years?? can i make this work?
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: will a 4th gen rear end work in a 3rd gen??
Yes.... 
on TGO and you'll find LOTS of info & all the details.
I wish people would first, instead of asking something that has been covered 1001 times......
on TGO and you'll find LOTS of info & all the details.I wish people would
first, instead of asking something that has been covered 1001 times...... 
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: will a 4th gen rear end work in a 3rd gen??
https://www.thirdgen.org/forums/tran...-10-bolts.html
JamesC
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: will a 4th gen rear end work in a 3rd gen??
Senior Member
iTrader: (2)
Joined: Jul 2007
Posts: 777
Likes: 4
From: Tampa/New Hampshire
Car: 91 camaro RS, 87 T/A
Engine: 350 TBI, 305 TPI
Transmission: 700r4
Axle/Gears: 4th Gen 3.42/BW 3.45
Re: will a 4th gen rear end work in a 3rd gen??
Yep a search will let you know whats up about almost anything. I know Myself and Stephen have completed the 4th gen rear swap so if you have any questions dont hesitate to ask but search first. Its 2 inches longer per side than a 3rd gen rear but search will show you what it will look like because both myself and Stephen have posted pics of our cars in almost every thread about this topic ever lol...
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: will a 4th gen rear end work in a 3rd gen??
Yep a search will let you know whats up about almost anything. I know Myself and Stephen have completed the 4th gen rear swap so if you have any questions dont hesitate to ask but search first. Its 2 inches longer per side than a 3rd gen rear but search will show you what it will look like because both myself and Stephen have posted pics of our cars in almost every thread about this topic ever lol...
I still have the OEM 9-bolt. The pics I posted were of local club members who have swapped in 4th gen rears.
I need to test fit my Snypers on a 4th gen rear equipped 3rd gen, before I decide to do the swap. I want to SEE how much my tires will stick out, I'm suspecting they'll stick out TOO much, for me to be happy.
Trending Topics
Senior Member
iTrader: (1)
Joined: Sep 2007
Posts: 914
Likes: 1
From: New Philadelphia/ Canton OH
Car: 1991 RS, 84 El Camino conquista RIP
Engine: 5.0 (for now)
Transmission: 4L60
Axle/Gears: 2.xx torsen limited slip & 3.42 ope
Re: will a 4th gen rear end work in a 3rd gen??
it will work 
just did it this last week.
just did it this last week. Senior Member
iTrader: (2)
Joined: Jul 2007
Posts: 777
Likes: 4
From: Tampa/New Hampshire
Car: 91 camaro RS, 87 T/A
Engine: 350 TBI, 305 TPI
Transmission: 700r4
Axle/Gears: 4th Gen 3.42/BW 3.45
Re: will a 4th gen rear end work in a 3rd gen??
Well....Not exactly.....
I still have the OEM 9-bolt. The pics I posted were of local club members who have swapped in 4th gen rears.
I need to test fit my Snypers on a 4th gen rear equipped 3rd gen, before I decide to do the swap. I want to SEE how much my tires will stick out, I'm suspecting they'll stick out TOO much, for me to be happy.
I still have the OEM 9-bolt. The pics I posted were of local club members who have swapped in 4th gen rears.
I need to test fit my Snypers on a 4th gen rear equipped 3rd gen, before I decide to do the swap. I want to SEE how much my tires will stick out, I'm suspecting they'll stick out TOO much, for me to be happy.
Hmmm i wasnt aware that the green camaro was not yours in addition to your Trans AM. Regardless theres a hell of alot of pics of it lol. I also suspect that your rims would stick out a little too far. There one of the sets that are stock 3rd gen offsets arent they? but they have a wider tire?
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: will a 4th gen rear end work in a 3rd gen??
Hmmm i wasnt aware that the green camaro was not yours in addition to your Trans AM. Regardless theres a hell of alot of pics of it lol. I also suspect that your rims would stick out a little too far. There one of the sets that are stock 3rd gen offsets arent they? but they have a wider tire?
Not the STOCK 3rd gen offset, but designed for 3rd gens. They have 4.5 bs, so they sit out farther than stock, by quite a bit, but still under the fenders. I suspect they'd sit out almost a full 2". 1" & less, I could probably live with, but not 2". Although...They would just give me an excuse to get IMSA flared quarters, which just happen to widen the car by...2 INCHES!
And yeah...I have 285s on them......For now. 315s coming soon!
Thread
Thread Starter
Forum
Replies
Last Post
1992rs/ss
NW Indiana and South Chicago Suburb
14
Jan 31, 2025 05:10 PM
hectre13
Engine/Drivetrain/Suspension Parts for Sale
2
Dec 11, 2023 08:14 AM
1992rs/ss
Engine/Drivetrain/Suspension Parts for Sale
16
Jan 28, 2016 09:58 PM
AkDrifted
Engine/Drivetrain/Suspension Parts for Sale
6
Aug 17, 2015 07:45 PM
