The EMD DDA40X is a 6,600 hp (4,943 kW) D-D locomotive, built by EMD from 1969 to 1971 exclusively for the Union Pacific Railroad. [1] . It is the most powerful diesel–electric …

Union Pacific 6936 is an EMD DDA40X locomotive built for the Union Pacific Railroad (UP). Previously a part of UP's heritage fleet, 6936 was for several decades the last remaining …

Jan 15, 2003 · Weighing in at 270 tons, the DDA40X was labeled as 'The World's Largest and Most powerful Diesel Electric Locomotive'." All of the Centennial units were equipped to …

The Centennials were the largest diesel-electric locomotives ever built. Actually comprising two engines on one frame, they delivered 6,600 horsepower. Designed and built exclusively for …

The Electro Motive Division DDA40X (nicknamed "Centennial") is a 6,600 hp, twin-engine (consisting of two modified 3,300 hp 16-645E3A engines), eight-axle diesel locomotive built …

Dec 16, 2024 · The DDA40X was an experimental, high-horsepower diesel locomotive designed by Electro-Motive for Union Pacific during the late 1960s. It received its classic nickname as …

Union Pacific (UP) #6936 is a DD40X built in January of 1971 in an order of 47 units numbered 6900-6946 and classified as the largest diesel locomotives ever built. They were nicknamed …

Below is a YouTube video that provides the history of the DDA40X engine from its beginning to the end of its service. Included in the video′s discussion is that UP DDA40X 6946, in the …

Union Pacific's 47 EMD DDA40X's were built between 1969 and 1971, the product of a joint effort between EMD and UP to build the largest and most powerful diesel electric locomotive ever …

Built by EMD exclusively for Union Pacific between 1969 & 1971, the DDA40X Centennial locomotives were the modern equivalent of the railroad’s famed Big Boy steam locomotives. …