Eng,and they are mid to low 14s stock, with intake and 3:73gears they are in low 13s.Also the RS is a peace of crap, stands for rally sport which comes with s 2.8 litter that are slower then a honda civic HB.Trust me if a Iroc z has few mods, it will surely keep up and pull. A co worker has one, and he runs 12.10s in Sacramento race way here in California. Just wanted to educate you on Camaro's.