Shelby Monaco King Cobra
The Shelby Monaco King Cobra, also known simply as the Shelby King Cobra, is a specially modified series of purpose-built sports racing cars, that competed in both the United States Road Racing Championship and the Can-Am series, between 1963 and 1967. It dominated and won the championship three consecutive years in a row (1963, 1964, 1965). The chassis and body were based around a lightweight Cooper T61 Monaco sports car, but the existing Coventry Climax  four-cylinder engine was swapped out, replaced, and then fitted with a  Ford Windsor small-block engine, which produced a massive , and  of torque, which drove the rear wheels through a 5-speed manual transmission. Since the car only weighed , this gave it an incredible power-to-weight ratio, and top speed. The later 1967 Can-Am version of the car was even more powerful, with , and  of torque, coming from an enlarged  Ford XE motor. References

Sports racing cars
1960s cars
Cars of the United States
Can-Am cars