- Gulf, Mobile and Ohio No. 800A
- Illinois Central Gulf
- Massachusetts Bay Transportation Authority (MBTA) No. 1101
- Built: EMD 1946.
- Weight: 230,000 pounds.
- Horsepower: 1500.
- Engine: EMD 567B 16 cylinder.
- Starting Tractive Effort: 55,000 lbs @ 25%.
- Continuous Tractive Effort: 40,000 lbs @ 9.3 mph.
- 645-C block
The Seaboard Air Line Railroad owned eleven EMD F3 units, Nos. 40224032 all bought in 1947, but this was not one of them. It was originally bought by the Gulf, Mobile and Ohio Railroad in 1946 and numbered 800A. The F3 was the fourth in EMD's series of F units designed to haul freight. The "F" originally stood for the 1400 HP of the first EMD FT units but, as HP increased on subsequent models, it soon came to stand for "freight." EMD built 4,736 F A units, and 2,906 cabless B units between 1939 and 1960. Although designated freight haulers, a number were modified by railroads to haul passenger trains, and the FP7 and FP9 units were specifically designed by EMD to do so. The FP10, however, was the product of modifications carried out in the late 1970s by the Illinois Central Gulf Railroad at its shops in Paducah, Kentucky and the designation was never officially sanctioned by EMD.
No. 800A was one of eighteen ex GMO F3 and one F7 units bought by the Massachusetts Bay Transportation Authority between 1978 and 1979. Renumbered 1100-1114 and 1150-1153, before moving to the MBTA, they were rebuilt by the ICG to emerge as FP10s. and all the units went into service on Boston commuter lines. #4033 is not in operational condition and some of the mechanical details include: Good body, fair wheels, H couplers, oil bearings, HEP, 26 brake, modern control stand, HEP system needs rebuilt, some roof leaks, all rotating equipment needs to be inspected
