(Thats taken from me other thread regarding hatchback and such)

Hi Will.

Now this confuses me. No 89 Z-28? Maybe me got something wrong. But I clearly have a red-orange Z28 logo in my car, and it was surely manufactured in the year 89. Its a 5.7ltr 350ci engine in there....
Maybe someone else has an input to.. ehm.. what am I driving right now?

Regarding the radio, Will, do you know where to get such an adapter and fill plate?

Thanyall

Cheers
DB

 

I believe it was an oversight of chevy leaving the Z-28 emblem on the IROC's

 

I have an 87' Iroc-Z

I was told the Z stood for Z28. Mine has the Z28 emblems on the sides and rear as well as the IROC stickers.

 

here is your explanation-They dropped the Z28 name/badges in favor of the Iroc badges.But its still a Z28.In 1991 they only did a half of a year of Irocs due to the contract running out. So in 1991 they started the Z28 name back up again.So you DO have a Z28, an Iroc-Z(28)I dont think i ever have seen any thing from GM/Chevy confirming that the Z stood for Z28,but what the hell else would it stand for?!?And the cars,as you said have the Z28 on the passenger dash, so ya,it is a Z28.

 

Gm dropped the Z28 as we knew it (85-87 style badging) and made only IROCs from 88-90. In 90 they lost the iroc name and used stricly Z28 again. In the years 88-90, the cars no longer said Z28 on the rocker panels or rear bumper, instead they read IROC-Z. It should also say that on the dash corresponding to the outside markings and correct year built. Mine sayd Z28 on the dash, as all 82-87 Z28's did. After that they read IROC-Z or Camaro for the RS models. In the 92 the dash plaque was yellow rather than orange. Where was your car produced, because there were NO straight Z28's built in 88-90. What is your engine setup? 350 CID TPI? Just going off what I know. I have seen people make similar mistakes in the past, something about your car may not be stock.

As far as the adapter plate, you can find them online in a variety of places, but you might check out onlinecarstereo.com. I do not know for sure whether or not they have it, mine was pruchased with a deck 2 years ago, so I didn't have to go find it, the installers gave it to me and I put it in.

I hope that helps.....


Will

 

Just FYI IROC stood for International Race of Champions and the Z stood for the Z rated tires they got.

 

There you see! IROC-Z and Z28, no correlation, though the early IROCs still wore Z28 emblems. Its all very funky to say the least, but an 89 Z28, very odd indeed........


Will

 

darth, What decals are on the car? There is no such thing as a Z28 from '89. Your car may have a number of parts put on it making it appear to be a Z28, but it just can't be.

I assume you have no decals on the door stating that its an Iroc, so either you have an Iroc with the stripe/decal delete option or you have new doors put on. But then again its also possible that the car has been repainted without the decals and stripes put back on as they are quite expensive to replace.

Oh well. If its an 89 with a Z28 logo on the dash its an Iroc.

 

Let me try to clarify this issue once and for all. I'll try to cover all the facts and correct some of the misconceptions stated above.

1985 - 1987

The IROC-Z was an OPTION on the Z28. Basically, it's comprised of suspension upgrades and exterior graphics. That's why you'll see exterior "Z28" emblems on these cars.

The interior dash badge on Z28's read "Z28" (for the 305 LG4) or "Z28 / TUNED PORT INJECTION" (for the 305 TPI and also 350 TPI in 1987). The Z28 with the IROC-Z option reads "Z28 / IROC-Z", regardless of engine.

The RPO code used on the Z28 is "Z28". If the car is equipped with the IROC-Z option, RPO B4Z will also be used in addition to the "Z28" code.


1988 - 1990

The "base" Z28 model was discontinued and replaced by the IROC-Z in 1988. The exterior badging was changed to read "IROC-Z", replacing the "Z28". The dash badge still read "Z28 / IROC-Z" though. GM was too cheap to retool an "IROC-Z" badge -- they continued to use the 1985 - 1987 badge.

The RPO code for the IROC-Z is "Z28" The B4Z code used in 1985 - 1987 was not used any longer.

The 1990 Camaro was short lived because of the termination of the Camaro in the IROC racing series. Production halted in December, 1989. That's why production numbers for 1990 Camaros are low. The 1991 Camaro was introduced very early (April 1990) to cover the gap left by the stoppage of the 1990 Camaro production.


FYI

The "Z" in "IROC-Z" has nothing to do with the tire speed rating. The IROC-Z tire originally used was the Goodyear "Gatorback", a P245/50VR-16. There were no "Z" rated tires at that time. This tire was replaced with the P245/50ZR-16 in 1989, although GM records indicate 1,263 IROC-Z's were produced with the "V" rated tire. Apparently, the Van Nuys plant where these cars were built did not have the "new" Z-rated tire on hand when production began.

 

Guess that Willie cleared it all out. But just to answer the questions posted by RedIroc and and stanghunter...
Yeah, the engine's a 350 CID TPI. It was produced in Norwood, Canada.
It does have those decals saying IROC-Z at the doors, the logo on the right side of the bumper, and the Z28 logo at the passenger side...

So long
DB

 

Therefore you own an Iroc. This would be like owning a Newer Saleen or Cobra Mustang and calling it a Mustang GT. The stickers are there for a reason, darth, they aren't like the ricer's stickers. Our stickers actually mean somthing

Welcome aboard!