Atlas N 40006027 DCC Sound Union Pacific UP #3626 EMD SD45 Diesel Locomotive

During the 1960s, the demand for high HP locomotives drove EMD and competitor GE to continue to push the limits of locomotive design. During the time when 3,000 HP 16-cylinder prime movers were the norm, EMD made the decision to introduce a 20-cylinder, 3,600 HP design. Dual mode DC and DCC operation.