 The car has a number of bolt-on engine modifications, including the new GenThree supercharger that is 32% larger than the factory unit, as well as a new TripleCooled intercooler system and high flow intake systems to deal with the added power.Unlike the stock unit in the C7 Z06, the Callaway supercharger protrudes from the hood.When paired with the LT1 in the standard Stingray, the SC627 package creates 627 horsepower and 610 lb-ft of torque.