On the GFX near the door the emblems read Z28, not IROC-Z like all the other IROC'S I have seen. Was this emblem present on 85 and 86 Iroc's. It is also on the rear bumper as well.

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'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter, 5" Autometer Tach w/shift lite
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage, and just replaced a burnt plug wire
"There is nothing more addicting than speed"

 

On my '85 IROC, the emblems below the doors, and the one on the bumper, all read 'Z28'. They are orignal on this car.

 

From 1985 thru 1987, the IROC-Z was an option package on the Z28. That's why you'll see the Z28 badging on these cars. In 1988, the Z28 was dropped and replaced with the IROC-Z. So from 1988 thru 1990, the IROC-Z badging was used on the exterior. GM was so cheap that they never tooled an IROC-Z dash badge. Instead, the prior Z28 badging was used.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

The GFX badging on 85-87 Iroc's all will state Z28, and below the badge will have a badge indicating the engine. In 88 the Z28 badge changed to an IROCZ badge. The reason for the change was that GM opted to discontinue the Z28, and build only Iroc's from 88-90. In 91 the Z28 returned and the badges changed to Z28 again.

 

You said that GM was cheap and didn't have IROC-Z dashpad emblems, however, I have one that says IROC-Z
Z28

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'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter, 5" Autometer Tach w/shift lite
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage, and just replaced a burnt plug wire
"There is nothing more addicting than speed"

 

My 85 IROC has the IROC emblem on the dash too.

JamesC

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My '85 Iroc, with the L69 HO package, has the orange Z28 emblem on the dash even though the interior is only black and grey.

 

What he means is that in 85-87 the dash said "Z28 IROC-Z", when it was an option for the Z28. In 88-90 when there was only an IROC-Z and no Z28, and they changed the ext. emblems to IROC-Z with no sign of the actual word Z28 on the car. Thats when they should have put just IROC-Z on the int. because it wasn't a Z28 option anymore, it was standard, although the Z in IROC-Z stands for Z28.

IMO, they shouldn't have decided to do that and should have just kept it an option for a Z28, but so many were buying IROC-Z28's instead of the Z28's it might have been stupid to keep making both.

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89 RS

STILL Looking For:
An 87 IROC-Z28 350 TPI


[This message has been edited by IROCZTWENTYGR8 (edited August 15, 2001).]

 

not all irocs before 88 had the engine size below he Z28 emblem.some just have Z28.

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~mike~86 IROC-Z

 

I feel a complete clarification on dash emblems are in order, so here goes:

1985 - 1987
The emblem on Z28's differed by which engine came in the car>>>
Z28 / LG4 = "Z28" emblem
Z28 / LB9 = "Z28 / TUNED PORT INJECTION" emblem
All IROC-Z's regardless of engine got the "Z28 / IROC-Z" emblem

1988 - 1990
All IROC-Z's regardless of engine got the "Z28 / IROC-Z" emblem. These are the cars that should have received an "IROC-Z" emblem (with no Z28 reference), but GM was again very cheap and was never done.

Willie

 

Maybe it was just to keep the word Z28 somewhere on the car.

------------------
89 RS

STILL Looking For:
An 87 IROC-Z28 350 TPI