Rear End Assembly 4th gen to 3rd gen
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 24
Likes: 0
From: Orlando, Florida
Car: 92' Firebird Convertable
Engine: 5.0L TBI "E"
Transmission: 700r4
Rear End Assembly 4th gen to 3rd gen
I have a guy I work with who has a 03 T/A Ram Air 3.73 rear end. I have a 92 convertable. Has anyone done a rear end swap like this? Is it more of a pain then it is worth?
It's no problem at all.
When I had Moser build my 12 Bolt I had them build it for 4th gen spec. It is just a little wider. Everything bolts up to the same places though. Now I just have to run wheel adaptors on the front wheels, 4th gen wheels fit on the rears.
When I had Moser build my 12 Bolt I had them build it for 4th gen spec. It is just a little wider. Everything bolts up to the same places though. Now I just have to run wheel adaptors on the front wheels, 4th gen wheels fit on the rears.
Junior Member

Joined: Feb 2004
Posts: 76
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From: Lake Ozark, MO
Car: 90 camaro
Engine: 305
Transmission: 700R4
No they never was a 03 t/a made, but the e- brake will need some work. I am doing the same thing and someone needs to make a design for the ebrake braket some we can copy it.
Joined: Feb 2001
Posts: 13,756
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
There was no 03 F bods and there wasn't a stock iussue 3.73 gear. Sounds like you better double check what it is that you are getting. Find out if he had those gears put in.
Thread Starter
Junior Member
Joined: Mar 2004
Posts: 24
Likes: 0
From: Orlando, Florida
Car: 92' Firebird Convertable
Engine: 5.0L TBI "E"
Transmission: 700r4
Opps my mistake
That was incorrect information on the rear end. It is a 2000 with 3.42 (changed to 3.73). My mistake. But thank you for the help and clarifacation guys.
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Supreme Member

Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
bolts right in.
do a search for 4thgen rear and you'll get TONS of hits.
heres one of several tech articals on the subject.
https://www.thirdgen.org/newdesign/t...hgenrear.shtml
its just like swapping any other rear in a 3rdgen.
do a search for 4thgen rear and you'll get TONS of hits.
heres one of several tech articals on the subject.
https://www.thirdgen.org/newdesign/t...hgenrear.shtml
its just like swapping any other rear in a 3rdgen.
Supreme Member

Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by cobb
Anyone know were i can get a ls1 rear end near Missouri
Anyone know were i can get a ls1 rear end near Missouri
there has to be a local club near you. even if its 4thgen, join it, listen and make friends.
then you can get stuff like that... cheap too.
other then that.... start searching the national boards, and watch your shipping costs.
Joined: Feb 2001
Posts: 13,756
Likes: 560
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by cobb
Anyone know were i can get a ls1 rear end near Missouri
Anyone know were i can get a ls1 rear end near Missouri
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