1955 Cadillac Eldorado Convertible. 1955 Cadillac Eldorado Convertible. This vehicle is equipped with a 325 Horsepower, 331 Cubic inch V-8 engine with an automatic. This car has the two-tone interior with features clock and radio. This Cadillac has power seats, windows, steering and brakes. Since this car has been well maintained and recently serviced, this vehicle is ready for its next owner.