Great Northern Railway No. 400

The Great Northern Railway No. 400 was the first of eight SD45s (numbered 400-407) delivered to the Great Northern in May and June 1966. Great Northern was the first railroad company to purchase this model of locomotive. GN 400 was the fourth SD45 built by EMD after the first three demonstrators. Great Northern christened it with its nickname, "Hustle Muscle." All eight SD45s wore Great Northern's simplified orange and green paint scheme, but only 400 wore a nickname. In total, Great Northern owned 27 SD45s built from 1966 through 1968.

In 1970, the GN became part of the Burlington Northern (BN). The locomotive was renumbered to 6430, but through 1972 it still wore its GN paint, with the GN logos removed. In 1973, the locomotive underwent a massive "class-one overhaul", and was painted into BN's cascade green scheme. At the request of railfans, BN kept its nickname painted on both sides of its long hood.

The BN retired 6430 in 1986, and donated the locomotive to the Great Northern Railway Historical Society. In 1989, the locomotive was repainted back into its original GN appearance and renumbered back to 400 in Grand Forks, North Dakota. The locomotive was then kept in Duluth, Minnesota on display and in operation until the early 2000s when it was moved to the former Great Northern Jackson Street Roundhouse in Saint Paul, Minnesota, which houses the Minnesota Transportation Museum. In 2006, the 400 was repainted a second time in Horicon, Wisconsin. The second repaint was completed using the original EMD and GN diagrams of the locomotive. The locomotive is housed at the Minnesota Transportation Museum's Jackson Street Roundhouse, where the 400 was serviced while operating for the Great Northern Railway.