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The package comes in strength-defined names based on how much power results from the supercharging. Trucks with the 5.3-liter V-8 are called SC450, as the engine�s output is raised to 450 hp and 450 lb-ft of torque, up from the stock 315 hp and 335 or so lb-ft (the output for all of these engines varies from model to model). The 6.0 is christened SC490, with output of 490 hp and 496 lb-ft, up from around 350 and 380. The top-dog SC540 supercharges the 6.2-liter V-8 to 540 hp and 522 lb-ft from stock levels of 403 and 417. The supercharger is accompanied underhood by an intercooler, higher-flow injectors, carbon-fiber injector covers, and a Callaway high-flow intake. A low-restriction Callaway exhaust also is fitted.
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Along with the engine upgrades, Callaway dresses up the exterior with subtle badging and adds embroidered headrests and floor mats inside. Additional options include wheel-and-tire packages, upgraded brakes (chef recommends), suspension upgrades, and a sport interior package. Callaway includes a three-year/36,000-mile limited warranty that can be extended to five years/100,000 miles. The trucks and SUVs can be ordered at participating Chevy dealers and are modified at one of Callaway�s U.S. facilities.
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by blog.caranddriver.com
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