History / OriginalityGot a question about 1982-1992 Camaro or Firebird history? Have a question about original parts, options, RPO codes, when something was available, or how to document your car? Those questions, answers, and much more!
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how do i know if my car is a true iroc? the year is 1985 and the engine is an TPI, the dash emblem says z28 iroc z and i read somewhere that if you look at the parts list inside the console box and it says B4Z that its an iroc....the guy that sold me the car had it primerd black but the color before it looks greenish because i can see the other color in some parts....i havent seen any green irocs before...let me know!
how do i know if my car is a true iroc? the year is 1985 and the engine is an TPI, the dash emblem says z28 iroc z and i read somewhere that if you look at the parts list inside the console box and it says B4Z that its an iroc...
Welcome to TGO. Your question is common, so a search, which will generally yield results, is always a good idea. B4Z is the RPO of the IROC package. Check the door placard for 16" wheels.
JamesC
__________________ "There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy." Hamlet
"Convictions are more dangerous enemies of truth than lies." Nietzsche
in 1985 the only colors available on the iroc-z were-silver metallic, black, bright blue metallic, yellow and red. that info is directly out of my original 1985 chevrolet camaro showroom brochure.
__________________ 1985 IROC Original Owner.Original silver paint, Roller 406c.i., 4 bolt, Superram, accel DFI 6. serpentine setup, Factory GM 1LE brake set-up, richmond 5 speed, 1 3/4 slp, jet hot, gale banks 2OTL power pack (vintage), eibach, grey leather flo-fits, A/C delete, 29k original miles and never been driven in the rain. all original parts are on the shelf. original window sticker and build sheets. 1996 Z28 M6 LT4 kit, hotcam, obd1, C5 brakes. And then theres the road runner.
To expand on what James and Stevo stated, check the RPO sticker (located inside the center console) for B4Z. More importantly, make sure the VIN code (also on the sticker) matches what is on the dash.
Just like the dash emblem and exterior decals, a center console can be swapped as well.
poke your head underneath the front end of the car-directly behind the radiator should be a round bar with stamped end flanges welded to it. it bolts on each side to the left and right subframe rail. it was called the "wonderbar" and only irocs had it from the factory. it stiffened the frame somewhat. if it is there does it look like it is original? factory fasteners and wear and tear dirt to go along with the vehicles age? if it lokks original your car was prolly an iroc.
__________________ 1985 IROC Original Owner.Original silver paint, Roller 406c.i., 4 bolt, Superram, accel DFI 6. serpentine setup, Factory GM 1LE brake set-up, richmond 5 speed, 1 3/4 slp, jet hot, gale banks 2OTL power pack (vintage), eibach, grey leather flo-fits, A/C delete, 29k original miles and never been driven in the rain. all original parts are on the shelf. original window sticker and build sheets. 1996 Z28 M6 LT4 kit, hotcam, obd1, C5 brakes. And then theres the road runner.
it was called the "wonderbar" and only irocs had it from the factory. it stiffened the frame somewhat.
Just for general info, the Wonderbar is a steering box brace. Apparently, IROC's with their 16-inch wheels stressed that area. Wonderbar = GM's Band Aid for a potential problem.
JamesC
__________________ "There are more things in heaven and earth, Horatio, / Than are dreamt of in your philosophy." Hamlet
"Convictions are more dangerous enemies of truth than lies." Nietzsche
Just for general info, the Wonderbar is a steering box brace. Apparently, IROC's with their 16-inch wheels stressed that area. Wonderbar = GM's Band Aid for a potential problem.
JamesC
thank you for that clarification. it makes me wonder if anyone reading this post has ever seen a f-body with subframe damage (ripped out steering boxes, bent framerails, etc from too much grip on the road. not collisions. just fatigue and wear and tear. like the old dodge b series van where the steering box would actually rip out its mounting points and spin in the frame as you steered it. (maybe a new thread is required)
1985 IROC Original Owner.Original silver paint, Roller 406c.i., 4 bolt, Superram, accel DFI 6. serpentine setup, Factory GM 1LE brake set-up, richmond 5 speed, 1 3/4 slp, jet hot, gale banks 2OTL power pack (vintage), eibach, grey leather flo-fits, A/C delete, 29k original miles and never been driven in the rain. all original parts are on the shelf. original window sticker and build sheets. 1996 Z28 M6 LT4 kit, hotcam, obd1, C5 brakes. And then theres the road runner. 
