EMD SD45-2 number 5661 is a 3600 h.p., 20 cylinder locomotive, representing the highest horsepower of any regular production locomotive in the 1970's. That's 20 diesel cylinders at 645 cubic inches each. An SD40T-2 is a 6-axle road switcher diesel-electric locomotive built by General Motors Electro-Motive Division having a 16-cylinder EMD 645E3 diesel engine producing 3,000 horsepower (2,240 kW). 312 SD40T-2s were built for North American railroads between April 1974 and July 1980. HO Scale: Operator Series - EMD SD45 - DCC Ready - Conrail ScaleTrains. $ 99.99 $ 124.99. HO Scale: Rivet Counter - EMD SD45 - DCC Ready - Southern Pacific ScaleTrains.