The Chevrolet Camaro ZL1 trim takes the famous muscle car and adds even more muscle. With upwards of 650 horsepower and some dramatic styling changes, the ZL1 is capable of taking it to the best muscle cars on the planet—and it’s a proper testament to Camaro ZL1s of years past. Originally introduced in 1969, the Camaro ZL1 was brought back again in 2012, running through the 2015 model year. The modern Camaro ZL1 is Chevy’s top-tier muscle, and it competes against the likes of the Ford Mustang Shelby GT 350 and the Dodge Challenger.