Compare the 2006 Chevrolet Corvette Convertible the regular 2006 Chevrolet Corvette. The Convertable has a cast aluminum V8 with a torque of 400 ft lbs @ 4400 rpm and a power of 400 bhp @ 6000 rpm with a red line of 6500. The top speed is 180.0. With a 6-speed manual.