Previous C6RS engines generated nearly the same output as the ZR1's 6.2-liter LS9 (600 versus 638 horses), but did so without the use of a supercharger. Instead, they relied on that time-honored technique of increasing displacement, in this case to a whopping 8.2 liters (500 cubes). Katech, the engine builder, initially wanted to use GM Performance Parts' LSX engine block, but an aluminum version wasn't available, so the company had Dart cast an exclusive billet block.
The result? An explosive 760 horses, along with an outrageous 830 lb-ft of torque. Although turning the blower faster (Eaton admits it can spin as high as 20,000 rpm) or swapping cams would unleash even more power, Thomson feels that would be overkill. As it is, there's more than enough impact at ground zero to make everybody run for cover.
Inside the cockpit, Dynamat sound-deadening materials give the C6RS the noise level of a bombproof vault. The steering wheel, upholstery, and bolstered seats all create an exclusive, limited-edition ambience. But as you might expect from a Department of Defense contractor, this hardware doesn't come cheap: $180,000, plus the cost of a Corvette (using '06 to current models, preferably with low miles on the odometer).
Even though the C6RS is now in full production, even more features are being evaluated at the company's skunkworks, such as a Mastercraft sequential paddle shift and a few other proprietary items. But they're military secrets for now, so we'll just have to wait and see Pratt & Miller's next plan of attack.