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EMD SW8

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Model of 800 hp North American diesel switcher

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EMD SW8

EMD SW8 retired from theUSAF Titan missile program

Type and origin
Power type	Diesel–electric
Builder	General Motors Electro-Motive Division General Motors Diesel (GMD, Canada)
Model	SW8, TR6
Build date	September 1950 – February 1954
Total produced	EMD SW8: 309 GMD SW8: 65 EMD TR6A: 12 EMD TR6B: 12

Specifications
Configuration:
• AAR	B-B
• UIC	Bo’Bo’
Gauge	4 ft 8+1⁄2 in (1,435 mm)standard gauge
Length	44 ft 5 in (13.54 m)
Width	9 ft 11.6 in (3.038 m)
Height	14 ft 6.2 in (4.425 m)
Loco weight	230,000 lb (104,326 kg)
Prime mover	EMD 8-567B
Engine type	V8 Two-stroke diesel
Aspiration	Roots-type supercharger
Cylinders	8

Performance figures
Maximum speed	65 mph (105 km/h)
Power output	800 hp (600 kW)
Tractive effort:
• Starting	57,000 lbf (254 kN) at 25%
• Continuous	36,000 lbf (160 kN) at 11 mph (18 km/h)

Career
Locale	North America South Korea

TheEMD SW8 is a dieselswitcher locomotive manufactured byGeneral Motors Electro-Motive Division andGeneral Motors Diesel between September 1950 and February 1954. Power is supplied by anEMD 567B 8-cylinder engine, for a total of 800 hp (600 kW). A total of 309 of this model were built forUnited States railroads and 65 forCanadian railroads. Starting in October 1953 a number of SW8s were built with either the 567BC or 567C engine.

US Army SW8s

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TheUnited States Army ordered 41 SW8s, numbered 2000–2040, for service in Korea during the Korean War. These were shipped in the spring of 1951.

After theKorean War, many US Army-owned SW8s were turned over to theSouth Korean government while others were retained by the Army and assigned to various Army posts, depots and ammunition plants. Most were retired around 1990 and replaced in service by rebuilt geeps, such as GP10s from VMV in Paducah, KY, and other rebuilders.^{[citation needed]}

Sacramento Southern (Ex-USAX) 2008 in Sacramento in 2021

Of all of the locomotives turned over to the Korean National Railroad, only one, KNR #2001, believed to be ex-USAX #2011, still exists. As of May 2011 it was stored in the back of a locomotive shed in the Korea Railroad Busan Rolling Stock Workshop, 125 Sincheon-ro, Busanjin-gu, Busan, Korea 614–765. Diesel Locomotive Team Leader Kim Hyun-Sik stated KORAIL is in talks with the city of Pusan to put the locomotive on display in the city as a part of Korea's heritage, as it is the oldest diesel locomotive in the country.^{[citation needed]}

Two examples of these locomotives, ex-USAX #2019 and #2022, are preserved at theHeart of Dixie Railroad Museum in Alabama. After serving in Korea,#2019 was sent back to the manufacturer for reconditioning in 1953.#2022 was rebuilt in 1955. Both served in military bases in the United States until the early 1990s, finishing their careers at Fort Campbell, Ky. The Heart of Dixie Railroad Museum acquired them in 1995.^[1]

Other models

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In addition, 12 TR6cow–calf paired sets were produced.

In May 1953, a single example of the SW8 was built with ahydraulic transmission as modelDH2. This locomotive was displayed at a trade show in 1955, but no sales of the DH2 followed. The locomotive was rebuilt with a standard electrical transmission, and served EMD as plant switcher #105 until 1968.

The first TR6A,Southern Pacific 4600, later numbered 1100, is preserved at theWestern Pacific Railroad Museum atPortola, California.

Original buyers

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EMD SW8 used atCape Canaveral Air Force Station for Titan missile

SW8

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Locomotives built by Electro-Motive Division, USA

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Railroad	Quantity	Road numbers	Notes
Electro-Motive Division (plant)	1	105	Built as model DH-2
Electro-Motive Division (demonstrator)	1	800	toIllinois Terminal Railroad 725
	1	801	toGeorgia Northern Railway 801
	1	500	toCuyahoga Valley Railway 855
Aliquippa and Southern Railroad	3	800–802	Built with 567BC engines
Atlantic Coast Line Railroad	10	50–59
Bamberger Railroad	2	601–602
Boston and Maine Railroad	8	800–807
Canton Railroad	4	40–43	42-43 were built with 567C engines
Cedar Rapids and Iowa City Railway ("Crandic")	3	91–93	Built with 567BC engines
Chicago and North Western Railway	1	801
Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road")	4	126–129
Chicago, Rock Island and Pacific Railroad	28	811–838	836-838 were built with 567BC engines. 838 was acquired byPfizer Incorporated in 1989 and then donated to theDanbury Railway Museum in 2002.^[2]
Chicago, West Pullman and Southern Railroad	5	42–46
Cincinnati Union Terminal	8	30–37
Colorado and Wyoming Railway	12	201–212
Columbia Iron and Steel	1	1
Delaware, Lackawanna and Western Railroad	11	501–511
De Queen and Eastern Railroad	1	D-3
Detroit, Toledo and Ironton Railroad	2	900–901
Donora Southern Raileoad	10	802–811
Great Northern Railway	3	98–99, 101	98–99 toBurlington Northern. 101 was rebuilt from an NW1
Lake Terminal Railroad	4	821–824
Lakeside and Marblehead Railroad	2	13–14
Lehigh Valley Railroad	29	128–129, 250–276	256-273 built with dynamic brakes.
Louisiana and North West Railroad	2	40–41
Ludington and Northern Railroad	1	16	Currently operational as Kendleville Terminal #16.
Merchants Despatch Transportation	1	15
Monessen Southwestern Railway	2	22, 26
New Orleans Union Passenger Terminal	3	1–3	Built with 567BC engines
New York Central Railroad	26	9602–9627	ToPenn Central thenConrail 8602–8627, 8618 is preserved on theStrasburg Railroad
New York Central Railroad (Chicago River and Indiana Railroad)	2	9600–9601	ToPenn Central thenConrail 8600-8601
New York, Chicago and St. Louis Railroad ("Nickel Plate Road")	8	107–114
North Louisiana and Gulf Railroad	2	37–38	Built with 567BC engines
Pittsburgh Coke and Chemical Company	1	4
Poplar Ridge Coal	1	801
Reserve Mining Company	2	1200–1201
Roscoe, Snyder and Pacific Railway	1	200
South Shore Railway	1	12	toIllinois Central Railroad 802
Southern Pacific Company	20	4604–4623	All built with dynamic brakes; 4622-4623 built with 567BC engines
Southern Pacific (Texas and New Orleans Railroad)	5	12–16
Steelton and Highspire Railroad	1	26
Tennessee Coal, Iron and Railroad Company	6	750–754, 770
Texas and Pacific Railway	8	811–818
Tremont and Gulf Railway	2	75, 77	to Illinois Central Railroad 800 and 801
Unity Railways	1	53
United States Army	41	2000–2040	All 41 served in the Korean War, including the 2019 and 2022 now at theHeart of Dixie Railroad Museum.^[1] 2002 is on display at theNational Museum of Transportation inKirkwood, Missouri.^[3]
United States Steel	1	109
Wabash Railroad	9	120–121, 125–126, 128–132
Wheeling Steel	2	1152–1153
Wichita Falls and Southern Railroad	2	801–802	to Rock Island 839–840
Woodward Iron Company	2	60–61
Total	309

Locomotives built by General Motors Diesel, Canada

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Railroad	Quantity	Road numbers	Notes
Algoma Central Railway	2	140–141
Algoma Steel	1	50
Canada and Gulf Terminal Railway	1	356
Canadian National Railways	34	8500–8533
Canadian Pacific Railway	10	6700–6709
Dominion Foundries and Steel Company ("Dofasco")	2	11–12
Dominion Iron and Steel	2	11–12
Essex Terminal Railway	2	102, 104	Essex Terminal 104 last SW8 built 2/54
Steel Company of Canada	7	71–77
Wabash Railroad	4	122–124, 127	Bought for use in Canada
Total	65

TR6

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Railroad	QuantityA units	QuantityB units	Road numbers A units	Road numbers B units	Notes
Electro-Motive Division (demonstrator)	1	1	1600	1600B	to Southern Pacific 4600 (A), 4700 (B)
Oliver Iron Mining Company	8	8	1207A–1213A, 1216A	1207B–1213B, 1216B
Southern Pacific Company	3	3	4601–4603	4701–4703
Total	12	12

References

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This article incorporatespublic domain material from the United States Government

^^a ^b"From Korea to Alabama: Train engines still pulling duty". US Army 314th Public Affairs Operations Center. June 2012. Retrieved2012-06-29.
^EMD SW-8 (1953) Pfizer 1 (Danbury Railway Museum)
^"Railway Equipment".The National Museum of Transportation. National Transport Museum Association. 2017. Archived fromthe original on June 9, 2018. RetrievedJune 10, 2018.

Pinkepank, Jerry A. (1973).The Second Diesel Spotter's Guide. Milwaukee, Wisconsin:Kalmbach Publishing.ISBN 978-0-89024-026-7.
EMD Product Reference Data Card dated January 1, 1959 has the 567BC and 567C engine data used in the as-built roster.

Wikimedia Commons has media related toEMD SW8 locomotives.

Amtrak rolling stock

Current

Railcars and trainsets	Acela trainset Avelia Liberty (future) Amfleet Horizon Metroliner cab car Siemens Venture Surfliner Superliner Viewliner
Diesel locomotives	GE Genesis P40DC P42DC GE P32-8WH Siemens Charger
Dual-mode locomotives	GE Genesis P32AC-DM
Electric locomotives	Siemens ACS-64
Work locomotives	EMD GP38H-3 EMD MP15 EMD SW1 EMD SW1000R EMD SW1001 EMD SW1500 GE 80t MPI GP15 MPI MP14B /MP21B NRE 2GS12B

Former

Railcars and trainsets	Bombardier LRC Budd Metroliner Budd RDC Pullman-Standard Bilevel Heritage Fleet Great Dome Pacific series Slumbercoach Strata-Dome Super Dome Hi-Level
Diesel locomotives	EMD E8/E9 EMD F3B/F7/FP7 EMD SDP40F GE P30CH EMD F40PH EMD F59PHI EMD F69PHAC
Dual-mode locomotives	EMD FL9
Electric locomotives	PRR GG1 GE E60 EMD AEM-7 Bombardier HHP-8
Gas turbine trainsets	UAC TurboTrain ANF/Rohr Turboliner
Work locomotives	ALCO RS-1/RS-3 ALCO S-2 EMD CF7 EMD GP7/GP9 EMD GP40 EMD SSB1200 EMD SW8 GE 45t/65t Railpower GG20B PRR E44
Leased	ICE 1 SNCF Class CC 21000 SJ Rc X 2000

v t e Diesel–electric switcher locomotives
Alco	ALCO Boxcab ALCO 600 HH600 HH660 HH900 HH1000 S-1 S-2 S-3 S-4 S-5 S-6 T-6 SB-8/SSB-9
Baldwin	VO-660 DS-4-4-660 DS-4-4-750 S-8 RS-4-TC VO-1000 DS-4-4-1000 S-12
Fairbanks-Morse	H-10-44 H-12-44 H-12-44TS H-12-46
GE	60-ton boxcab 100-ton boxcab 600-hp centercab 1000-hp centercab DEY-2 EN-6 25-ton 35-ton 43-ton 44-ton 45-ton 50-ton 60-ton 65-ton 70-ton 80-ton 95-ton 100-ton 110-ton 125-ton 126-ton 128-ton 1800-hp transfer 2000-hp transfer U5B U6B
GM/EMD	SC, SW, NC, NC1, NC2, NW, NW1, NW1A, NW4, T NW2 NW3 NW5 TR1 SW1 SW7 SW8 SW9 SW14 SW600 SW900 SW1000 SW1001 SW1200 SW1500 SW1504 MP15DC MP15AC MP15T RS1325 GMD1
Lima-Hamilton	LS-750 LS-800 LS-1000 LS-1200
National Railway Equipment	1GS7B 2GS14B 3GS21B 3GS21C

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US Army SW8s

Other models

Original buyers

SW8

Locomotives built by Electro-Motive Division, USA

Locomotives built by General Motors Diesel, Canada

TR6

See also

References