Athearn Genesis G82259 HO Scale EMD GP9E Southern Pacific "Kodachrome" SP 3370 UP - WP Prime air filters

Prime air filters

Based on Baldwin switchers constructed in the 1950s

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About the same time

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Athearn Genesis G82259 HO Scale EMD GP9E Southern Pacific "Kodachrome" SP 3370 UP - WP Prime air filtersAthearn Genesis G82259 HO Scale EMD GP9E Southern Pacific "Kodachrome" SP 3370 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