Z28....IROC-Z.....SS.....RS
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Joined: Jan 2007
Posts: 13
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From: Brownstown, In
Car: 1984 Camaro Z28
Engine: 305
Transmission: 700R4
Z28....IROC-Z.....SS.....RS
simply i would like to know which is prolly the best in opions. and what is the diff. besides looks? if any.. thanx
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From: Ganiesville GA
Car: 1992 z28/1992 RS heritage edition
Engine: 350 tpi, 305 tbi
Transmission: 700R4,T5
Axle/Gears: G92
there is no third gen ss that is the IROC and the IROC has better supension and a wonderbar a z28 has diff supension RS is base model no 350
Joined: Oct 2006
Posts: 3,041
Likes: 8
From: West of Toronto
Car: 89 IROC
Engine: 305 TPI / ZZ4 cam
Transmission: Stage 2 700R4, LS1 driveshaft
Axle/Gears: Strange 3.42 w/ Auburn
RS is the base unit.
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
Joined: Sep 2005
Posts: 6,258
Likes: 6
From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
RS is the base unit.
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
1990 was the last year of the IROC-Z actually.
Supreme Member
iTrader: (2)
Joined: Jul 2006
Posts: 1,576
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From: Ganiesville GA
Car: 1992 z28/1992 RS heritage edition
Engine: 350 tpi, 305 tbi
Transmission: 700R4,T5
Axle/Gears: G92
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Supreme Member

Joined: Sep 2005
Posts: 2,151
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From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
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From: Victoria BC Canada
Car: 87 Camaro IROC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.23
RS is the base unit.
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
SS doesn't exist in a 3rd gen. Does in a 4th.
IROC was made from 85 to 89.
Z28 cam most years although some years the IROZ is the Z28.
IROZ has the best suspension setup and bigger parts. Look for a 350.
If you want detailed info. Buy the "Camaro Whit Book". It has all the facts, options and figures for each year car.
Ask question......that's what thirdgen is all about...........
1991 and 92 z28 350 models have the best options available with the exception of the t-top option. if you want to counteract that with any other model then the same year 1-le counterpart.
92's slightly better for the little last minute changes gm made. you get the most for your money with these years and the cars are noticeably nicer. irocs in a close second for the name and history behind it.
92's slightly better for the little last minute changes gm made. you get the most for your money with these years and the cars are noticeably nicer. irocs in a close second for the name and history behind it.
Joined: Sep 2005
Posts: 6,258
Likes: 6
From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Pretty hard to find them for sale usually. At least for a reasonable price anyway.
And yea it's true the '90 model year was a half year, but it's still recognized as the last year of the IROC-Z, which is why mine has IROC-Z emblems and door decals.
And yea it's true the '90 model year was a half year, but it's still recognized as the last year of the IROC-Z, which is why mine has IROC-Z emblems and door decals.
Joined: Dec 2005
Posts: 6,499
Likes: 31
From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
Im sure you could find this info if you looked hard enough, but for something so general, it's hard to figure out how to do a search, so I'll lay out everything that I know for future searchers:
The RS was the old base model, but they gave it IROC Z/28 ground effects, so it looked a lot better. IT basically took the place of the old base models. The Z28 is the top of hte line except for 1985-1990. The IROC Z and the Z28 were the same car from 1987-1990. After 1990, there was no more IROC it went back to being called the Z28.
The RS was the old base model, but they gave it IROC Z/28 ground effects, so it looked a lot better. IT basically took the place of the old base models. The Z28 is the top of hte line except for 1985-1990. The IROC Z and the Z28 were the same car from 1987-1990. After 1990, there was no more IROC it went back to being called the Z28.





i thought..... 
