The SRT guys recently took the new Viper over to Livernois Motorsports in Dearborn, Michigan for a bit of testing. The results for the SRT V-10 were a very impressive 558 horsepower at the wheels and 526 lb.-ft.of torque. (Keep in mind that at-the-wheels numbers are usually 15 percent lower due to driveline losses, so these numbers are very much in keeping with the factory numbers of 640-horsepower at 6,200 rpm and 600 lb.-ft. of torque.) Video after the jump! Via SRT