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 operational "Centennial" type, and thus the largest operational diesel-electric locomotive in …

Union Pacific has announced plans to donate its remaining Centennial, No. 6936, to the Railroading Heritage of Midwest America.

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 Centennial units because the first one built came out on the 100-year anniversary of the construction of the Transcontinental Railroad.

Union Pacific No. 6936 is a DDA40X type diesel locomotive built by Electro-Motive Diesel (EMD) in January 1971 for the Union Pacific Railroad (UP). It is one of 47 of these diesels built exclusively for the UP between 1969 and 1971 and is one of thirteen units that survive in preservation today...

On Feb. 18, 2008, UP operated an SAVBL inspection train powered by DDA40X 6936. This video shows it between Houston and Bloomington, TX.

2024年12月16日 · Of all the experimental diesels Union Pacific tested, the Centennials were without question the most successful. The fleet logged millions of miles in service and were well-liked by crews. For many years one DDA40X remained active on the UP roster, #6936, as part of its heritage program.

2023年9月6日 · After several years of not turning a wheel under its own power, Union Pacific DDA40X 6936 is no longer sitting idle. The 6,600 horsepower twin-engine diesel moved again on August 19 in a short, but successful, test run as both prime movers smoothly turned over. It last ran seven years ago in Cheyenne, Wyo., when it was still owned by UP.

The Union Pacific 6936 is the last operating Centennial. The Centennials--designated DDA40X--were produced by the Electromotive Division of General Motors Corp. 6936 at Union Station in Denver, CO preparing to leave for Frontier Days in Cheyanne, WY on July 24, 1999. Front of 6936 as it departs Union Station, Denver, CO.

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 operational "Centennial" type, and thus the largest operational diesel-electric locomotive in …

One unit #6936 has recently had a major overhaul and is still owned and regularly operated by the UPRR. Displayed with Big Boy 4023. Built 4/69, Donated 6/88. Units 6900, 01 & 02 were delivered with a 7000 HP rating using 20% fuel injectors. They were returned to 6600 HP when 10% injectors were installed in 1970. Displayed with UP 2-8-2 #2005.