The 2013 Viper in all its venomous glory. Under the hood, the Viper keeps the 8.4 liter V10 engine, but it now makes 640 horsepower and an absolutely outrageous 600 pound feet of torque. All that torque will be enough to convert the all new Pirelli tires into smoke in record time. Speaking of those tires, they are 355 millimeters wide in the rear, 295 in the front. For those of you that know cars, these tires are simply massive. Low and wide, it looks like nothing else on the road.