This text was not translated, because it is originally in English Rumor has it that the 2015 Chevrolet Corvette Stingray isn't slated to get the Z06's eight-speed auto for at least another year. The 2015 Chevrolet Corvette Z06 just about blew our collective minds when it debuted earlier this month at the Detroit auto show. Supercharged 6. 2-liter V-8? Check. Six-hundred and thirty-five horsepower? Check. Available eight-speed auto? Claimed PDK-beating shift speed? Check and check. When Chevy announced the 2015 Corvette Z06's optional eight-speed automatic, many assumed that the eight-speed would replace the base Corvette Stingray's dated six-speed automatic for the 2015 model year. That actually may not be the case, says Corvette chief engineer Tadge Juechter in a new interview.