The 2015 Chevrolet Corvette Z06 is officially the most powerful production car ever made by General Motors, with its supercharged 6.2-liter V8 engine rated at 650hp at 6,400 rpm and 650 lb-ft (881 Nm) of torque at 3,600 rpm. Previously, GM said the engine produces more than 625 horsepower and 635 lb-ft (861 Nm) of torque. Read more »
