Conrail inherited EMD GP7's from the Penn Central(252), Reading Company(17), Erie Lackawanna(71), and the Jersey Central(13). CR placed the units in series 5600-5999.

Built between October 1949 and May 1954, EMD powered it's first hood unit with their 16-cylinder supercharged 567B prime mover.

Conrail's GP9 fleet was inherited from the Penn Central with over 300 units, while the Erie Lackawanna and the Lehigh Valley each brought 6 units to the roster. CR placed the GP9's in series 7000-7512.

Built between January, 1954 and December, 1959, the GP9 produced 1,750hp through EMD's 16-cylinder supercharged 567C prime mover.

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