After the first prototype was tested in 1989, production of the original Dodge Viper began in 1991. The steel tube frame chassis, fiberglass panels and lack of any modern driving aids or amenities equated to a curb weight of only 3,284 lbs. A/C became an available option in 1994. The V10 powerplant would remain a constant in all subsequent model years; the first generation cars, sold from 1992-1995, had an 8 liter version pumping out 400 hp and 465 lb-ft of torque. The 6-speed manual gearbox was another constant in the Viper, and its huge rear tires allowed for almost 1 g of lateral acceleration. The 1st gen Viper accelerated from 0-60 mph in 4.6 sec and clicked off the quarter mile in 12.9 sec, with a top speed of 164 mph.