This 2004 Corvette Z06 is finished in Machine Silver over black leather. The 5.7-liter LS6 V8 was based upon the contemporary LS1 and features a refined aluminum block, a higher-lift camshaft, a 10.5:1 compression ratio, and increased air and oil flow. Factory-rated output for the 2004 model year was 405 horsepower and 400 lb-ft of torque.