Callaway engineers have finalized Callaway Corvette powertrain calibrations, following comprehensive vehicle testing and validation. Based on dynamometer testing with production-level components and calibration, the 2014 Callaway Corvette has been rated at 627 horsepower at 6400 RPM — a 167 horsepower increase over the stock, baseline Corvette. Peak torque is rated at 610 lb-ft at 4400 RPM, 145 lb-ft greater than the stock LT1’s output,
Callaway uses SAE certified power correction to compute horsepower and torque for its cars and trucks, employing the same method that Chevrolet and other vehicle manufacturers use. Using standard corrected computation for power and torque, as many aftermarket manufacturers use, the Callaway Corvette SC627 would be rated at 657 horsepower and 639 lb-ft of torque.
In dynamometer tests, horsepower increased consistently from idle to maximum engine speed, and avoided peaking at 6000 RPM. The supercharger system includes Callaway’s new intake manifold design, its new intercooler design, and a 2300cc high helix angle, four-lobe rotor pack. Callaway developed the new long-runner manifold to increase mid-range torque, producing 57 lb-ft (SAE) more than last year’s Callaway Corvette.
The engineers also devised a new intercooler system with three discrete liquid-to-air cooling elements, providing unequalled inlet air cooling efficiency. Plus, by extending the supercharger housing through the hood, convective heat transfer yields additional reduction of inlet air temperature. Reducing inlet air temperature provides more oxygen molecules for a given volume of air, increasing power while helping to prevent engine-damaging detonation. However, supercharging inherently increases air temperature as it increases air pressure. Unchecked, this can result in negating the supercharger’s positive effects. Callaway’s new intercooler configuration practically eliminates this temperature increase, as proven repeatedly during product development testing on the dyno and at the racetrack.
Callaway Cars Incorporated is an automotive engineering and manufacturing corporation specializing in high performance applications. Founded in 1976, the corporation’s four core business units include Callaway Cars, Callaway Carbon, Callaway Engineering, and Callaway Competition. The firm owns facilities in California, Connecticut and Germany, and produces specialty vehicles, engineering services, and performance products that showcase technological sophistication, artistry in design, and beauty in craftsmanship.