Southern Pacific Class GS-5 Semi-Streamlined Steam Locomotive
The GS-5 was a streamlined 4-8-4 Northern type steam locomotive that served the Southern Pacific Company from 1942 to 1958. Two locomotives were built by the Lima Locomotive Works and were numbered 4458 and 4459. GS stands for "Golden State" or "General Service."
The GS-5s are identical in appearance to the GS-4s, the only difference being the roller bearings that gave the locomotive a smoother ride and added weight. 4458 had roller bearings from the Timken Company and 4459 used SKF brand roller bearings. They had a silver smokebox with a dual-headlight casing (top headlight was a mars light), and an enclosed, all-weather cab. It retained the skyline casing on the top of the boiler, skirting on the sides, an air horn (for use at speeds due to being louder than the whistle which was rarely if ever used on the main line) and teardrop classification lights. They received the orange and red "Daylight" paint scheme. The GS-5's were designed for high-speed passenger service on Southern Pacific's premier passenger trains, the Coast Daylight, San Joaquin Daylight and Sunset Limited. In later years they were painted black and had their side skirting removed for easier maintenance. The GS-5s were considered the best of the GS series and ended their careers on Southern Pacific's San Joaquin Valley line.
Neither of the two GS-5's survive after running well over a million miles. Surviving GS-4 4449 was equipped with roller bearings on the lead truck, trailing truck and tender (But not the main axles or rods) in 2008 and therefore shares some of the same characteristics as a GS-5. The roller bearings on the two GS-5's were so successful that when both No. 4458 and No. 4459 were scrapped, they were examined afterwards and showed minimal wear in spite of running well over one million miles.
Locomotive No. 4458 was known as the pinnacle of steam power on the Southern Pacific Lines, and lasted in service the longest, pulling the ever popular Valley Daylight until late 1956.
Type and origin
Power type: Steam
Builder: Lima Locomotive Works
Serial numbers: 7856, 7857
Build date: May–June 1942
Total produced: 2
GS-5 No. 4458 was equipped with Timken roller bearings.
Classic Streamliners - TRAINCYCLOPEDIA
Southern Pacific GS-5 No. 4458.
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Text: wikipedia.org. Images: Public Domain; http://www.commons.wikimedia.org (unless otherwise specified) and 17 U.S. Code § 107 fair use. References: Lewis, Robert G. The Handbook of American Railroads. New York: Simmons-Boardman Publishing Corporation, 1951, 2nd Edition 1956. Site Map Contact webmaster HERE.