was a streamlined 4-8-4
Northern type steam locomotive
that served the Southern Pacific Company
from 1941 to 1958. They were built by the Lima Locomotive Works
and were numbered 4430 through 4457. GS stands for "Golden State" or "General Service."
The GS-4 had a slightly different appearance than that of the GS-3
, most drastically the dual-headlight casing (top headlight was a mars light
) on the silver smokebox
. Another change in appearance was the cab, which was changed to a fully enclosed, all-weather cab, a feature not commonly found on steam engines. It retained the skyline casing on the top of the boiler, skirting on the sides, an air horn, teardrop classification lights, and whistles. They received the orange and red "Daylight" paint scheme.
The GS-4s were designed for high-speed passenger service and capable of running at sustained speeds of up to . Southern Pacific's premier passenger trains were pulled by GS-4s, the Coast Daylight
, San Joaquin Daylight
, Golden State
and Sunset Limited
, as well as many other Southern Pacific name trains. During wartime and also in the first years after the war some of the GS-4 locomotives were painted entirely black, and it wasn't until 1948 that all engines were painted into Daylight colors again. Starting in March 1950, they were gradually painted black again and also had their side skirtings removed for easier maintenance, and were re-assigned to the San Jose
... Read More