torque. [3] The later B2K's produced 450 hp (336 kW) and 613 ft·lbf (831 N·m) of torque. [4] ZR-1 (1990-1995) Chevrolet Corvette ZR-1 In 1986, the Corvette team approached Lotus , then a GM subsidiary, with the idea of developing an ultra-high performance vehicle based on the C4 Corvette. With input from GM, Lotus designed