The SD45 is a six-axle diesel-electric locomotive class built by General Motors Electro-Motive Division between 1965 and 1971. It has an EMD 645E3 twenty- cylinder engine generating 3,600 hp (2,680 kW) on the same frame as the SD38, SD39, SD40, and SDP40. As of 2023, most SD45s have been retired, scrapped or rebuilt to SD40-2 standards.

SP bought 3 experimental EMD 4200hp SD45X's #9500 - 9502, during 1970, and tested them for EMD in the Sierra's. These came painted in standard SP paint, and SP light packages.

The Southern Pacific purchased three SD45X from EMD in 1970 (SP 9500-9502) and tested them for EMD in the Sierra's over Donner Pass. The were delivered in full SP paint and equipment (standard headlight package, etc).

Dec 20, 2024 · SD45X. Only seven of this variant were produced in 1970-1971. It was an experimental design which tested EMD's new "Dash 2" upgrades and could produce 4,200 horsepower. The model was also equipped with EMD's latest HT-C truck, which was a standard option on the SD40-2. Photo Gallery

EMD SD45X; Data Sheet Information Compiled by: Jean-Denis Bachand: New: 11 September 2006: Artwork by: Jean-Denis Bachand-Engine Builder: EMDI: Engine: 645F3B 16 cylinder: Bore & Stroke: 9.02" X 10" RPM (Maximum / Minimum) 904 / 318 : Main Generator: AR10: Horsepower: 4200: Gear Ratio: 62:15 :

Jun 12, 2009 · EMD built three SD45X’s for the SP as their 9500-9502, and built three more to SP specs as EMD 4201-4203. If you look closely at the photo of 4202, you can see the SP nose lights and Nathan P3 horn along with the roof mounted bell.

EMD SD45X at MILW South Mpls engine terminal, located north of Southtown Yard Description: This same location has recently been redeveloped as the "Hiawatha" light rail repair shops

The EMD SD45X is an experimental 6-axle diesel-electric locomotive that was built General Motors Electro-Motive Division mostly for the Southern Pacific Railroad with a total of seven examples built between June 1970 and February 1971.

EMD SD45; Data Sheet Information Compiled by: Jean-Denis Bachand: Revised: 12 Feb. 2014: Artwork by: Jean-Denis Bachand-Engine Builder: EMDI: Engine: 645E3 20 cylinder

SP bought 3 experimental EMD 4200hp SD45X's #9500 - 9502, during 1970, and tested them for EMD in the Sierra's. These came painted in standard SP paint, and SP light packages.