With a new patent-pending supercharger, intercooler (with three liquid-to-air cooling elements), and intake, Callaway’s Corvette SC627 is sure to make some C7 folks happy. For $22,995 on top of a base Corvette, you can add 167 horsepower and 145 lb-ft of torque (for 610 at the rear wheels) from the standard 6.2L Vette motor.
What’s cool about the SC627 is that max torque comes on at around 4,400 rpm – about the same moment as a stock Stingray.
Source
GM Authority