The C/K was Chevrolet and GMC’s full size, pickup truck line from 1960 until 1999 in the United States, from 1965 to 1999; “C” indicated two wheel drive and “K” indicated four wheel drive. … The power plant for this 1971 Chevrolet C10 is a very strong 350CID V8 that has been bored 60 over for more horsepower and torque.