| Great Northern 400 | 
|---|
| GN 400 after arriving in Duluth, June 7, 2019. | 
| | Type and origin | 
|---|
 | Power type | Diesel | 
|---|
 | Builder | Electro-Motive Division | 
|---|
 | Serial number | 31598 | 
|---|
 | Model | SD45 | 
|---|
 | Build date | 1966 | 
|---|
 | 
|  | 
| | Performance figures | 
|---|
 | Power output | 3,600 horsepower (2,700 kW) | 
|---|
 | 
| | Career | 
|---|
 | Operators |  | 
|---|
 | Numbers |  | 
|---|
 | Nicknames | Hustle Muscle | 
|---|
 | Locale | Duluth, Minnesota, United States | 
|---|
 | Delivered | May 1966 | 
|---|
 | Retired | 1986 | 
|---|
 | Restored | 1989, 2007, 2019 | 
|---|
 | Current owner | Great Northern Railway Historical Society | 
|---|
 | Disposition | In service | 
|---|
 | 
| On operational lease to the Lake Superior Railroad Museum. | 
Great Northern 400, nicknamed Hustle Muscle, is a restored SD45 diesel locomotive originally owned by the Great Northern (GN). It was built in 1966 as the first production SD45 by Electro-Motive Division.