Southern Pacific GS-3 class

The GS-3 is a semi-streamlined 4-8-4 Northern type steam locomotive that served the Southern Pacific Railroad from 1937 to 1957. They were built by Lima Locomotive Works and were numbered 4416 through 4429. GS stands for "Golden State" or "General Service." They had 80 inch driving wheels, boiler pressure of 280 psi, and could deliver 62,800 pounds of effort, even more if the added booster engine was used.

The GS-3 had an appearance similar to the GS-2. Just like the GS-2, they featured a silver smokebox with a cone-shaped single headlight casing, teardrop classification lights, an air horn, and whistles. Aslo retained were the streamlining features; a skyline casing on the top of the boiler, skirting on the sides, and recieved the orange and red "Daylight" paint scheme. They were primarily used on Southern Pacific's premier passenger train at the time, the Coast Daylight. In later years they were painted black, had their side skirting removed for easier maintenance, and were reassigned to the San Jose-San Francisco commute trains, freight service, and made occasional appearances on the San Joaquin Daylight.

No GS-3 locomotives survive.