Stepping up to the third IROC-Z package got buyers cruise control, auxiliary lighting, twin remote mirrors, power driver’s seat, an interior roof console, a graphic equalizer and more.

The 1987 Z28 got the optional Iroc-Z performance package and 5.0-liter TPI engine. Other desirable options include leather seats and a shorter 3.23 axle to boost response. Finding a well-preserved ...

In the mid-1980s, just as the pony car wars started heating up again, Chevrolet introduced the IROC-Z option on the Camaro as a way of not only competing with the Mustang, but tying in its racing ...