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When introduced in 1982 there were two body styles for the Camaro, Sport Coupe and Z28. Sport Coupe came standard with a four cylinder engine with 2.8L V6 optional. Z28 had ground effects and a carborated 5.0 liter V8. It was in 1985 that the third generation got serious with performance. The IROC - Z was introduced. An acronym for International Race of Champions, the car was loaded with race and performance minded features. Larger rims shod with p245-50ZR Goodyear Gator-back unidirectional tires were standard on the IROC. Powering this gem was a 5.0 liter 215hp version of the Corvette's 5.7 liter Tuned Port Injection. The car was a head turner and quick for the day. Zero to sixty times around 6.9 seconds were not uncommon. The biggest drawback was that the most powerful engine could only be mated to a four speed automatic transmission. For 1986 there was a detuning for corporate average fuel economy regulations that maxed power output at 190hp. That would all be fixed in 1987 with the introduction of the 5.7 liter Corvette engine pumping out 225 hp. Never again would a top line factory spec Mustang be a performance match for the top line factory spec Camaro (except in sales).