The 1991 Ford Thunderbird is a two-door "personal luxury car" from the Ford Motor Company. The Ford Thunderbird has a Ford Essex V-6 engine. It is a V-shaped six-cylinder design, featuring overhead valve configuration and aluminum heads. It has a 3.8-liter capacity. The base and LX trims have one that offers 140 horsepower and 210 lbs.-ft. of torque. The top-level Super Coupe trim, however, has a supercharged version that generates 210 horsepower and 315 lbs.-ft. of torque.