The Southern Pacific GS-4 is a class of semi-streamlined 4-8-4 "Northern" type steam locomotive operated by the Southern Pacific Railroad (SP) from 1941 to 1958.

Southern Pacific 4449, also known as the Daylight, is the only surviving example of Southern Pacific Railroad 's GS-4 class of 4-8-4 Northern type steam locomotives and one of only two streamlined GS class locomotives preserved, the other being GS-6 No. 4460 at the National Museum of Transportation in St. Louis, Missouri.

Oct 19, 2018 · In 1930, the SP designed a locomotive similar to those Mountains that had a very large firebox (90.4 sq ft) and a four wheel trailing truck to support it. Thus, evolved the Southern Pacific 4-8-4 which was designated Class GS (Golden State) by the SP.

The Lima-Southern Pacific GS-4 ("GS" meaning for "Golden State" or "General Service") is a type of semi-streamlined 4-8-4 Northern steam locomotive built by the Lima Locomotive Works in 1941 and 1942 specifically for the Southern Pacific (SP) Railroad.

The GS-4 runs on eight massive 80 drivers, 300lbs psi boiler pressure, and puts out a roaring 5,500 horsepower at 55mph, with a maximum speed of 110 mph. The large drivers gave the locomotive a high top speed; the telling mark of a steam engine built for passenger service.

Photo and text © Robert Foerch: The loco is an early United Models import which was painted black to start with. The model was taken apart, stripped, broken solder joints repaired, cleaned and painted. Text to follow... Mainline Modeler January 1995 - Southern Pacific GS-4 History and Plans - by Al Armitage.

The GS-2 locomotives were the Daylight's first streamlined steam engine. They were of the Northern type 4-8-4's and classed Golden State model 2. They were designed by Southern Pacific and built by Lima Locomotive Works in 1936 for the new 12 car Daylight passenger train.

The Southern Pacific GS Series is a series comprised of eight classes of GS 4-8-4 "Northern" Type steam locomotives built by Baldwin and the Lima Locomotive Works between 1930 and 1943. The GS...

Southern Pacific 4449 is the only surviving example of Southern Pacific Railroad's (SP) GS-4 class of steam locomotives. The GS-4 is a streamlined 4-8-4 (Northern) type steam locomotive. GS stands for "Golden State", a nickname for California (where the locomotive was operated in regular service), or "General Service."

The GS-4 runs on eight massive 80' drivers, 300lbs psi boiler pressure, and puts out a roaring 5,500 horsepower at 55mph, with a maximum speed of 110 mph. The large drivers gave the locomotive a high top speed; the telling mark of a steam engine built for passenger service.