What do you do if you like to go fast, but still need the ability to haul stuff? You could buy a Ford Raptor, but the truck is set up for desert pre-running, not on-pavement fun. Dodge no longer makes the V10 equipped SRT-10, and the Chevy 454 SS is a distant memory. If your pickup tastes run to something with a bow tie on the grille, Callaway has a bolt-on kit for the Silverado 1500 that adds 135 horsepower and 115 ft lb of torque to the stock 5.3 liter V8, bringing it up to 450 horsepower and 450 ft pounds of torque. In case that’s not good enough for you, Callaway also offers a kit with 540 horsepower and 522 for pounds of torque, which should ensure you get the mulch home from the garden center, pronto.
Both kits use a Roots-type blower, manufactured by Eaton, to generate the bulk of the additional thrust. The kits include an intercooler, higher flow fuel injectors, custom intake, low restriction exhaust and Callaway badging, and each kit comes with a 3 year, 36,000 mile warranty. Callaway claims that the kits have no penalty in fuel economy, but that assumes the driver has the self-restraint of Mahatma Ghandi; I’ll go out on a limb and guess that I could burn though a tank of gas (and a set of rear tires) a lot quicker in a Callaway tuned Silverado than in a stock one. Prices start at $15,995 (plus your donor Silverado), so check out Callaway’s SportTrucks page if you’re interested.
Source: GM Authority