I_R_O_C_Z_2_8

iTrader: (6)

Well i picked up a "supposed" iroc z28....the guy sold it to me for 160 dollars!!! i could not pass it up but it has no motor or tranny or the center console is not there...i decoded the vin and its a 87 so i know that the vin shows its a 305.....i wanted to know if it was a true iroc it has the 3rd brake light on the spoiler lip...and has decals but thy where put on wrong and dont even look good so if anybody can help me i ran the vin on a web site and it came back it was a iroc z28/ z28 and the motor came back as mpi is that the same as tpi i know this is long but wanna know if its a iroc? thanks

Drew

iTrader: (58)

What's the 8th digit of the VIN? That might narrow it down, but really what does it matter? Are you going to restore the car to 100% original? If not, don't worry about it. $160 is a deal even for a base model.

I_R_O_C_Z_2_8

iTrader: (6)

the 8th digit is a f...im thinking of making it a drag car there is no rust on it what so ever whole body is in good shape but i wanna know if its a iroc...it has a 5.7 tpi but i knew right away it was a 5.o cause the 8th digit is a f..it has 3 iroc rims

Drew

iTrader: (58)

What does the tire card say in the drivers side door jam? If it shows 245/50VR16 tires you know it's an Iroc. The F indicates a 305TPI, so you know it's at least a Z28. The key differences between the Z28 and the Iroc that year were the wheels, and emblems. Either way if it's not a numbers matching car, that's going to be a bigger hit then being a Z28 without the Iroc option.

JamesC

iTrader: (5)

Since IROC's were equipped with 16-inch rims in 87, check the door placard for size. Anything but a 16 and no cigar.

Great minds, Drew, think alike .

JamesC

I_R_O_C_Z_2_8

iTrader: (6)

i dunno know if it matters but it has the 145 speedo on it....did the z28s have the brake light on the spoiler??

I_R_O_C_Z_2_8

iTrader: (6)

It also has t tops and the headliner it has that map light and calander thing.

Drew

iTrader: (58)

Body wise, the Z28/IrocZ in 87 are both identical. Aside from the cosmetic markings, and wheels, they're the same. The Z28 could have all of those features.

I_R_O_C_Z_2_8

iTrader: (6)

Oh ill check it out then i know it has the 16 inch single stripe iroc rims..also i ran it thru a vin thing earlier and it came back as a irocz28/iroc

AmorgetRS

iTrader: (6)

The VIN will not tell you if it is an IROC or not.

I_R_O_C_Z_2_8

iTrader: (6)

but thats what came back as what the car was from the dealer is what imsaying

Drew

iTrader: (58)

The / designates and/or. The VIN number for a LB9 Z28 and a LB9 Irocz are going to be indentical except for the sequence number and check digit. There's nothing to designate a difference.

I_R_O_C_Z_2_8

iTrader: (6)

Thanks to everybody who helped me..I checked the door today and it said 245vr/50/16 so i guess it is an iroc thanks.

84redta

iTrader: (34)

What about the wonderbar above the front sway bar? If it's a true IROC it should have one being it will have the 16" wheels. It can be easily added, but if equally rusty as the rest of the underneath, and nothing looks modified, than it can be assumed original.

I_R_O_C_Z_2_8

iTrader: (6)

everything in the engine bay is gone thats why i had trouble identifying it.

pwdbychevy

Bringing up this old post from the dead for informational purposes. Irocs have the B4Z option code on the sticker in the glovebox. That is all.

scottmoyer

You brought up an old post to state incorrect information! Not all IROC-Zs have the B4Z code. Only 1985-1987. In 1988-1990, all IROC-Zs had the Z28 RPO code.

pwdbychevy

The OP stated that he had an 87 irocZ and that's what I was referring to.

scottmoyer

Ok. In the future, you might want to be more specific. I don't want someone in the future referencing your post, telling someone that they don't have an IROC-Z because the B4Z code is missing. After many years, and seeing how words get twisted in politics, we need to be as accurate as possible in our posts. Thanks for contributing and clarifying.