Built by EMD as a passenger commuter locomotive for the Massachusetts Bay Transit Authority. Operated on both North & South side commuter operations in Boston, MA. Retired by MBTA and stored, some of the mechanical details include: Roller bearings, AAR B-B wheel arrangement, Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge, Trucks Blomberg, Length 56 ft 2 in (17.12 m), Width 10 ft 7 in (3.23 m) , Height 15 ft 7.5 in (4.76 m), Loco weight 260,000–282,000 lb (117,934–127,913 kg), Prime mover EMD 645E3, Engine type V16 Diesel ,Alternator AR10/D14, Traction motors D77, Cylinders 16, 26-C air brake valves, comp shoes, 57/20 gear ratio, approx. 500KW Head End Power generator.