GP40 (3000 HP) 3 units
6595 6783 6828
Notes -Original block of CSX GP40s ran from 6500 to 6854, with the addition of former RF&P GP40's 6855-6861 upon RF&P takeover. -6595 built in 1971 as B&O 4020, used long-term by the AAR at their testing facilities in Pueblo, CO -6783 built in 1970 as SCL 1629 -6828 built in 1971 as C&O 4073