for the 85-87 camaros they made 2 different models the iroc and the z28 what is the difference between the two?

 

this might help some?

http://www.camaro3rdgen.20m.com/IROC.html



and even better
http://www.iroc-z.com/flashlight/how...body/body5.htm

 

the second link was exactly what i wanted to know thanks a lot

 

http://www.thirdgen.org/newdesign/tech/techdb.shtml

 

As usual, iroc-z.com's info is incomplete.

In addition to the billstein shocks & struts, & 16" wheels, the IROC also got a wonderbar, different steering box, single color paint scheme and unique decals.

 

does an 87 IROC have a wonderbar and where is it located on the car

 

Its a steering box support (not wonderbar) . Location in front of car above the sway bar. Stop before you ask what swaybar.

 

It's called the wonderbar and it does a lot more than support the steering box, in fact that was a secondary benefit if any. Most IROCs still have a crack in the frame near the steering box. The wonderbar was designed to reduce flex in the front end during cornering. This benefits the handling by keeping the front-end geometry more true, plus puts less strain on the steering box & the frame behind it. All IROCs had it.

"The front structure is reinforced with a new crossmember, that the engineers call the "wonderbar"; bolted in place just below the front anti-sway bar, it stiffens the car's front structure during high-g cornering." Car And Driver, October 84.

It may or may not be called the steering box support from GM, but it's known almost universally as the wonderbar.

 

how much better is the steering box for the IROCs compared to the z28?

 

It's not any better. It just prevents the wheels from turning quite so far so that the 245 50 16 tires don't rub the inner fenders. I don't believe the ratio is any different.

 

May be it should be called the WONDERBRA / WONDERBAR OR I WONDER WHAT IT IS. It should be called by the correct name and that is (STEERING BOX SUPPORT BAR ) get real.

 

Complain to the GM engineers, not me. That's where the name came from, and regardless of what you think it should be called, it's known as the "Wonderbar". You and the guy behind the parts counter are the only 2 people that know what the hell a steering box support bar is.

 

And you make THREE! Also Vendors such as
TOPS DOWN SOLUTIONS & SPOHN PERFORMANCE as two examples. You should also inform them of the correct name for the WONDERBAR (AKA steering box support) in their Catalogs..