I know that the Z28 and iroc is better than the RS, but whats the main differences between the Z28 and IROC? my z28 has everything , power windows, doors, air, etc. so whats the main differences? when did the iroc come out? just curious guys. thanks

nate

 

The "IROC" Camaros were available from 85-90. But from 85-87, the IROC was just a package option on the Z28. In 88, the IROC replaced the Z28 as the top of the line edition of the Camaros. But in the early years the IROCs were "better" than the Z28s because they were avavilble with the 350s and better looking rims and such.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 Hot Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

7.5" 10 Bolt with 3.42s soon to come!

 

I've often heard that bigger swaybars and Bilstien struts were standard on all IROCs but an option for Z28s. I do know my IROC has the biggest baddest looking swaybar I've ever seen. It's like an inch and half or more in diameter.

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'88 IROC 305 TPI
Crappy 700R4 slushbox
Gutted airboxes
180 degree T-stat
Advanced base TPS voltage
Relocated IAT sensor
Momo steering wheel (gotta luv it)
Ram-air setup coming soon
Flowmaster muffler (puke)
Taylor SpiroPro wires
Accel cap and rotor
Ported plenum
Kills: '94 Z28, Olds Aurora V8, bunch of Mustangs, T-birds, ricers, and others who assumed a 12 year-old car would be too slow.

 

Its pretty much the engine type and sometimes you get more options when you buy the better known name which is the IROC...but mostly it was engine the bigger engone was avaliable in the IROC and not in the Z28.

 

Its pretty much the engine type and sometimes you get more options when you buy the better known name which is the IROC...but mostly it was the size of the engine and the the bigger engine was avaliable in the IROC and not in the Z28.

 

IROC's have better suspension, 1 color including GFX, IROC rims, and the option of a 350 TPI engine.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.