yeah i was wondering what the diff was between a z28 and a iroc z is.
i just bought an 83 z28 and it has iroc z stickers on the doors also did someone just put these stickers on teh door for looks or is my car realy an iroc z?

 

if its an 83 yes, becuase IROC-Z/28's weren't until 1985 There are only a few minor differances between the two. Most being an apperance package.

 

yeah if you look at my car you would get the impression that the ariganal owner realy wanted it to look like the 91-2 iroc z.
my car is lowered its black with white racing stripes and has the 91-2 iroc z ground affects all the way around on it and it has big iroc z stickers on the car. if you dont look at the registration for what year the car you would never know that it was just a z28.
its a pretty sharp looking car.
the only thing i am missing now is the high rise iroc z spoiler in the back. i am going to talk with {ssaudio} into hooking me up with one for a good price he lives right in my toun also .

 

thats cool, any pics! sounds like a nice car...

 

The IROC-Z stopped in 1990 guys. So it couldn't look like a 91-92 IROC-Z because there really isn't one. The differences between an 83 Z28 and even an early IROC-Z would have been great. The whole suspension would have been different including the drivetrain. The high-rise spoiler you are talking about was frot he 91-92 Z28's, since there was no IROC-Z's.

Basically, it sounds like you would have a nice 91-92 Z28 clone if you took the IROC-Z stickers off the car.

sorry if that post sounds rude or anything, i'm really tired right now and need to be sleeping for work tonite.

 

lol yeah i can get some pics of it but it wouldnt look that well its all put for the winter right now, the wheels are all off it and the suspension is all covered up and its covered in a big tarp right now.
give me a week and when im not bizy i might uncover it all and take a couple of pics of it.

 

i learn more every day here lol.
but i thought the iroc z was made untill 92 this is all new stuff to me then i guess.

 

Night rider Z28 whats the VIN # on the car???

 

nope..

IROC-Z came around in 1985 to celebrate the using of the Camaro Z28 in the International Race Of Champions racing series. I have heard numerous people claim the reason why the IROC was discontinued in 1990 because the government thought the "car was too fast". Which makes me laugh everytime i hear it. The real reason the car was stopped was because the IROC series switched the car used for the race to the Dodge Daytona for the 1991 racing year. So basically if you wanted an IROC from the 91-92 era, you would have yourself a Daytona. Hope this information comes in handy sometime. And i'm sure some IROC owners will be in here shortly to give more information to you. I forget the guys name on the boards, but there is one moderator? (i think he is anyway) and his name is like iroc____, but anyhow he knows his stuff, if i thinking of the correct person. So if you would like to know more about the car, he might be one person to search out for, or you could ask about the cars on the history board, the guys in there are really helpful with those questions.

 

[QUOTE]The real reason the car was stopped was because the IROC series switched the car used for the race to the Dodge Daytona for the 1991 racing year[QUOTE]

Their contract expired and they didnt renew it
but you are right

 

im in nj helping my aunt move into her new house for 4 dasy so i cant get the vin number right of. but i have checked the vin # out before and it is a true 83 z28 with a 305 L69 Ho with a 700r4 tranny. if my mom didnt no so little about cars then i might be able to get the vin # sooner. its funny all my mom knows is how to start the car put it in drive and drive oh and put gas in it and watching her do that is funny sometimes. oh and i mean her car i dont let her drive my car cause she never let me ever drive hers when i was first learning.

 

[QUOTE]Originally posted by Fbirdta878787
[QUOTE]The real reason the car was stopped was because the IROC series switched the car used for the race to the Dodge Daytona for the 1991 racing year

Quote:

Their contract expired and they didnt renew it
but you are right

yea...you know your really tired and need to get sleep when you start leaving out info...i wanna get some sleep...but i cant fall asleep...grrrr night jobs suck when ppl r at home making noise on the weekend.

 

Well heres my theroy. Maybe the car was in an acciendent and alot of parts were destroyed so possibly the original owner decides either to just put it back together with what he can find or he wanted a custom Z/28 IROC replica or even just wanted a trick looking car to fool people... all possiblities

 

i have to agree i think he just realy wanted it to be a nice custom and actualy im kind of stuiped for not remembering this but actualy the one who helped desien the car and put it together is a member of this sight, mark {ssaudio} so if he reads this he can fill me and the rest of us in on it. so mark if you read this please fill me in on the car because you seem to know more about it then i do.

 

Mark A Sheilds??? the moderator

 

no lol mark as in {ssaudio} he is usualy in the car sterio threads.

 

doh

 

Did the 83 Z's have a 700r4?

 

They had MXO 4 speed overdrive auto's. Now wheather thats what they called them or that was the RPO.. Someone help

 

I thought it was a 200r4.....or a th350? Heck, I just thought it WASN'T a 700.

 

All 82 F-Bodies got a 3 Speed automatic, no overdrive, or a 4 speed manual. 83 F-Bodies could have had a 4 speed auto (700R4), the 3 speed auto (TH200C), a 4 speed manual (Borg Warner T10), or a 5 speed manual (Borg Warner T-5). 84 and up could only have a 700R4 or a T5. Also, 89 and up F-Bodies with a 5 speed have a world class T5, which is pretty much the same transmission as the older T5, but it takes ATF instead of gear oil, and its a little bit stronger.

This makes it a little easier to see.

Available Transmissions:

1982 - TH200C 3-speed auto, BW T10 4-speed manual
1983 - TH200C 3-speed auto, BW T10 4-speed manual, TH700R4 4-speed auto, BW T5 5-speed manual
1984-1988 - TH700R4 4-speed auto, BW T5 5-speed manual
1989-1992 - TH700R4 4-speed auto, WC T5 5-speed manual


The easiest way to tell on an 83, is if yuo have an automatic, and you have overdrive, then you have a 700R4. If not, you have a 200C. If you have a manual, and its a 4-speed then you have a T10. If a 5-speed, you have a T5.

Also, an interesting side note, 82 F-Bodies have a non hydraulic clutch setup, which uses a Z-bar.

 

Before I bought my 91 Z28...I was looking at another one....and the guy tried telling me that it was a 1991 IROC-Z....and...everybody knows that the last year was 1990....al of the badges had been changed over fomr "Z28" to "IROC-Z" and I was like.....man.....hate to tell you this..but....thats not an IROC.....and he was like having a cow......!! weirdo......!

 

I'm not sure about the '90 IROC but the auto trannies for the '91-92Z28s are 4L60s.

 

Ah, an IROC-Z history question on the Appearance and Detailing board.

Would that IROC_______ be me?!

Anyway, no your car is not an IROC-Z28, some1 just put the stickers on. They were made from only 85-90 as said, to commemerate the Camaro Z28 being used in the IROC races and then were later discontinued due to Chevrolet not renewing the contract. The difference from your car is the looks, TPI availablility, (LB9 then L98) better aerodynamics compared to the earlier cars, 16X8 aluminum IROC rims, 245/50/16" Z rated tires, .5" lowered ride height, Delco-Bilstein rear gas shocks, special front struts, increased spring rates, special jounce bumpers, 5 degrees of caster (up from 3.5 on the Z28) in front wheel alignment, WonderBar, better steering ratio, and larger rear stabilizer bar with stiffer bushings.

Also, yes the 700R4 was available then and no, there was never a Third Gen with a 4L60E.

 

Wonderbars also came on 91Z28350s.

 

Yeah some did, because there was leftover from the 90 IROC-Z's half production year.

 

Whats a wonderbar????? is that the big front sway bar???

 

Suuuurrrre,that's what you IROC owner's like to believe.Common mistake. Anyway do you all really believe that? Wouldn't GM just send unused parts like that to GM dealership parts department warehouses?..just doesn't sound right.

 

A front frame brace.

 

No,it's a small straight bar that is connected along with the sway bar mounts at the frame,in front of the swaybar.

 

No, alot of times they use up the parts, we've been over this plenty of times on the History board and there are few later Z28's that got them. Some did and some didn't, if you did.......

 

yep,I did

 

Does any one have a pic of a wonderbar...this has really sparked my interest

 

This is it
and this is where it is bolted to,his is painted red

 

Are all IROC's suppose to have one of those???

 

Yes they should all have 1, if you don't......

 

NOOOO!! Man Mine doesnt have one...that really makes me tweak but asuming the background of this car (not very good) its almost to be expected well what do those run brand new??

Why did the original owner have to go and crash this car twice...

 

I don't think they are available through GM anymore but you can get them from SPOHN.

http://www.spohn.net/index.cfm?fusea...&categoryid=55

 

Now I see they have 2 options a plain jane one or an adjustable... I'm looking to lower my car 2in and which would be the better choice...what makes an adjustable one better than a soild one???

 

https://www.thirdgen.org/techbb2/sho...hreadid=148763

 

I picked up two of the wonderbars for $10 at a junkyard the same day I ordered one from the dealer for $23. Should have went to the junkyard first.
Put one on my car and sold the other two.

 

Zeph, you're always wheeling and dealing . . .

What's the latest on your car? Spoiler/No Spoiler?

Have you decided on a drivetrain??

 

This is how it is staying, but will be all black,


I am going LT4 with T56.

 

awww. but it looked so cool without the spoiler!

 

it looked ok, but if the bumper didn't stick out, I'd take it off.

 

here it is guys tell me what you think

 

Doh, thats not even a real IROC-Z sticker, I suggest taking that off.

The car is pretty nice though.

 

bueatiful car..yea the stickers have to go though unless u like it...otherwise that car looks badass

Looks better than mine and mine is an IROC

never fear It will look pretty sweet next year when I'm done with it...

 

True, 91-92 F-body transmissions, and I believe some early 93's are 4L60's. This is the exact same transmission as the TH700R4, except that GM renamed it. The 4L60 is not to be confused with the 4L60E which comes in fourth gens. Although extremely similar, the 4L60E has computer controlled shift points. GM renamed all their transmissions for a more ordered setup. Names like 4L60, 4L60E, or 4L80E actually have a bit of meaning. The 4, meaning 4 speed, the L, meaning longitudally mounted (as opposed to transversally), the number is a power rating, whereas the 80 is beefier than the 60, and finally the E, meaning electronic.

 

hey man...your car looks great, something about it really sets it apart and gives it a really aggressive look...besides the stickers the only thing i see that looks odd to me is the rear bumper...the GFX don't match up with the rest of the car...other than that it looks great, usually I'm not a big fan of those rims, but they look great on your car!