2014 Callaway Corvette

Callaway Corvette Dyno GraphIf you under promise and over deliver, you can never disappoint people, and apparently the tuning mavens at Callaway know that lesson well. When the company announced its latest tuned Corvette a few months ago, it said that it would have roughly 620 horsepower and at least 600 pound-feet of torque. That would have been impressive gains over the stock 'Vette by itself, but the new supercharged sports car has actually been rated at 627 hp and 610 lb-ft as its final specs. Job well done.

The key to the latest Callaway Corvette is its 6.2-liter supercharged V8 that gets a redesigned, patent-pending supercharger with a new intake manifold and an intercooler with three liquid-to-air cooling elements. The supercharger housing also protrudes through the hood to aid cooling even more.

According to the dyno (right), Callaway's Corvette reaches its peak 627 hp at 6,400 rpm, an additional 167 hp over the standard car and 23 hp less than the upcoming Z06. The Callaway's max 610 lb-ft comes on about the same time as the stock 'Vette at around 4,400 rpm. However, the supercharged engine has an impressive 145 lb-ft more than normal, but 40 lb-ft less than the Z06. The tuning company claims that it uses the same SAE-certified power correction method as Chevrolet to calculate the specs.

With the numbers official, the latest Callaway Corvette is now in production, and the company is already shipping them out to waiting customers. Prices start at $22,995, plus the cost of the donor car. Scroll down to read the full press release about the tuner's latest supercharged creation.
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2014 CALLAWAY CORVETTE HP, TORQUE UPDATE: 627 bhp, 610 lb-ft

Callaway engineers have finalized Callaway Corvette powertrain management system calibration, 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 hp increase over the stock Corvette baseline. 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 hp and 639 lb-ft of torque.

The graph shown below illustrates the power increase produced by Callaway's unique, new-for-2014 supercharger design (pat. pend.) and single acoustic chamber exhaust system. Note that horsepower increases consistently from idle to maximum engine speed, and avoids peaking at 6000 RPM. Note the broad torque curve, with output exceeding 500 lb-ft (SAE) at only 2200 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 race track.


As you can see in the photo below, Callaway technicians haven't wasted any time. Now that calibration development is completed, Callaway Corvette SC627 production has commenced. Production cars have already begun shipping from Callaway's Old Lyme Connecticut and Santa Ana California facilities.

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 with facilities in California, Connecticut and Germany. The organization produces specialty vehicles, engineering services, and performance products that showcase technological sophistication, artistry in design, and beauty in craftsmanship.