16. Chevrolet Camaro IROC-Z
The third-generation Camaro was a popular car. But, after a while, the buyers wanted more performance and power. So, Chevrolet delivered just that in the form of the legendary IROC-Z version. Entering the car market in 1985, the IROC-Z was a tribute model to the Chevrolet-sponsored International Race of Champions racing series.
However, it was much more than just an appearance package and a cool name. Under the hood was a 350 V8 with 225 HP in the early years and 245 HP in later versions. Car buyers could opt for a manual or automatic.
Also, they tuned the suspension as well as steering. Chevrolet even offered a cool-looking convertible that was the first Camaro ragtop in 18 years. The IROC-Z proved to be a popular, influential muscle car that finally brought some real performance to the market.