What does ss stand for on chevy cars?

Some Chevy vehicles maintain the "SS" designation because they've been equipped with a high performance package and are described as "Super Sport" models. The first Chevy offered for general retail sale featuring the "SS" package debuted in 1957 as the "Corvette Corvette SS". The current Chevrolet Camaro "Super Sport" edition includes A6.2 liter LT1 V8 engine capable of generating 455 horsepower and 455 lb.-ft. Of torque and reaches 0 to 60 speeds in just 4 seconds. The 6-speed manual transmission is designed to replicate a race car/performance shifting experience. The Camaro's magnetic suspension technology provides state-of-the art road surface response, furthering the unique characteristics of a Chevy "Super Sport" vehicle. The Camaro's status is also displayed on the side of the vehicle where the performance insignia has been installed.