Originally limited to Sport Coupe, Rally Sport, and Super Sport trims, Chevy quickly realized its Camaro needed more guts. So Chevy created the road-going Z/28 in 1968 as a "virtual race-ready" vehicle. It housed a 302 small block V8 with an aluminum intake and a four-barrel Holly carb, and came with better a suspension, racing stripes, and 15-inch rally wheels. Its listed 290 horsepower number is widely known to be underrated. It also spawned one of the most iconic race cars of all time: the Donohue-Penske SCCA Camaro.