* The 1986 IROC-Z came standard with the 5.0L (305 cubic inch) V8 producing 190 horsepower.
* An optional 5.7L (350 cubic inch) Tuned Port Injection (TPI) V8 was also available, offering 220 horsepower.
While other Camaro models in 1986 offered V6 engines, the IROC-Z was reserved for the V8 option, focusing on its performance image.