Athearn Genesis G82355 HO Scale EMD GP7 Pennsylvania PRR 8583 DCC & Sound On30 SL Athearn 72925 HO Scale Chemical

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Athearn Genesis G82355 HO Scale EMD GP7 Pennsylvania PRR 8583 DCC & Sound On30 SL Athearn 72925 HO Scale ChemicalAthearn Genesis G82355 HO Scale EMD GP7 Pennsylvania PRR 8583 DCC & Sound In 1949, EMD introduced the GP7. The basic design followed most diesel switchers with the addition of a short hood instead of an end cab. The hoods were also full height to better accommodate the diesel engine and mechanical and electrical components. In 1954 EMD upgraded the GP7 to become the 1,750 horsepower GP9. Externally, the first GP9s were virtually unchanged from the