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EMD "GP9" Locomotives

Last revised: March 4, 2024

By: Adam Burns

The GP7 was Electro-Motive's first, true road-switcher.  The locomotive's broad ranging capabilities allowed railroads to utilize it in a multitude of assignments; road service, switching, branch line, passenger, and even commuter.

Its redundancy, coupled with EMD's impeccable reputation, made it an immediate success with more than 2,700 examples produced.

The following GP9 was nearly identical in appearance.  However, the model, as part of EMD's so-called "9 Line," offered greater horsepower and even better reliability. 

By the mid-1950s, and the GP7's success, railroads had largely lost interest in handsome streamlined diesels.  The road-switcher, while less elegant in appearance, could perform many more tasks and was safer for crews.

The GP9 saw even higher sales than its predecessor and remaining steam holdouts like the Norfolk & Western purchased large fleets of the model to finally retire the iron horse forever from remaining Class 1 systems.

Today, hundreds of GP9s remain in operation on short lines, or in use at tourist railroads. In addition, others are preserved at various museums and historical societies.  

Photos

2937842364712468237589237856796983.jpgLehigh Valley GP9 #301, wearing one of the road's many late-era liveries, is seen here at the road's terminal in Sayre, Pennsylvania on September 9, 1972. Bob Wilt photo. Warren Calloway collection.

Overview

The first GP9 completed was Milwaukee Road #2400 in January, 1954.  As part of EMD's latest "9 Line," which also included the F9, SD9, and E9 the model continued the builder's efforts at continously improving its product.

As Brian Solomon notes in his book, "EMD Locomotives," the model was the most advanced, rugged, and reliable in the series sporting EMD's latest prime mover and other internal components.

The 567C power plant was the latest in the series up until that time.  Its upgrades included a redesign of the engine crankcase to withstand a greater beating in daily service, replacement of water seals susceptible to leaking on older model 567s, and an improved cooling circuit.

7800091235413132531756758960789.jpgA pair of Southern Pacific GP9's, #5684 and #5711, lead a westbound/southbound freight over the big lift bridge spanning the Carquinez Strait near Martinez, California circa 1956. Gordon Glattenberg photo. American-Rails.com collection.

Specifications

EMD's locomotives were reliable, easy to maintain, and efficient. Once again it was EMD's chief engineer Richard "Dick" Dilworth who laid out the general design of the GP7, and the company's styling department headed by John Markestein put the finishing touches on the new model.

Rio Grande GP9 #5913 lays over with other power next to the roundhouse in Pueblo, Colorado during the 1970s. American-Rails.com collection.

The GP9 carried the appearance of its predecessor but offered new features as previously mentioned. The 567C featured a slight, 250 increase in horsepower over the earlier GP7. To achieve this, engineers increased rotational speed from 800 to 835 rpm as the engine's bore and stroke remained the same.

It was also equipped with a new traction motor, the model D37.  EMD offered six different gear ratios for the GP9, depending on a railroad's need.  They were, of course, most often used in freight assignments, but were also available with optional steam generators for passenger or freight assignments.

78005761747156298860970938.jpgChicago, Burlington & Quincy GP9 #288 is seen here at work in Kansas City, circa 1965. American-Rails.com collection.

Spotting Features

The GP7 and GP9 were nearly identical and it required a keen eye to spot the notable differences.  The most recognizable was the addition of a stainless steel, "GP9" model nameplate located just forward of the battery box ahead of the cab.

This cosmetic feature was first offered on the "9 Line" and available upon customer request.  Much more inconspicuous characteristics included louver locations; the GP7 featured three directly below the cab, as well as two vertical louvers just below the radiator shutters near the end of the long hood.

The GP9, by contrast, included only one (or no) louvers below the cab and one beneath the radiator shutters.  EMD also made slight changes during production; later variants lacked side skirting over the fuel tank and one large cooling fan at each end of the roof, replacing four found in earlier models.  

285209350927437298390479038.jpgPennsylvania GP9B #3808-B (built as #7183-B) and GP9 #7269 at East Peoria, Illinois, circa 1967. American-Rails.com collection.

Finally, some final examples were built with low, short hoods; an indication of the future.  As Gerald Foster notes in his book, "A Field Guide To Trains," over the years such spotting features became somewhat unreliable in discerning model types as many were heavily rebuilt or modified.

Data Sheet

Entered Production1/1954 (Milwaukee Road #2400)
Years Produced1/1954 - 10/1959 (12/1959 for GP9B)
Engine567C
Engine BuilderGM
Horsepower1750
RPM835
Cylinders16
Length56' 2"
Height (Top Of Rail To Top Of Cab)14' 6"
Width10' 3"
Weight249,000 Lbs (Average)
Fuel Capacity800 Gallons
Air CompressorGardner-Denver
Air Compressor ModelWBO
Air Brake ManufacturerWestinghouse
Air Brake Schedule6BL
TrucksB-B
Truck TypeBlomberg
Truck Wheelbase9'
Wheel Size40"
Traction MotorsD37 (4), GM
Primary GeneratorD12D, GM
Auxiliary GeneratorDelco
AlternatorD14
MU (Multiple-Unit)Yes
Dynamic BrakesYes
Gear Ratios65:12, 62:15, 61:16, 60:17, 59:18, 58:19
Tractive Efforts (Continuous)52,400 (65:12); 40,000 (62:15); 37,000 (61:16); 34,000 (60:17); 32,000 (59:18); 29,509 (58:19)
Top Speed55 mph (65:12), 65 mph (62:15), 71 mph (61:16), 77 mph (60:17), 83 mph (59:18), 90 (58:19)

Production Roster

Total Built = 4,092

Owner Road Number(s) Serial Number(s) Ordr Number Completion Date
Western Railway of Alabama (West Point Route) 530-531 18724-18725 5306 05/54
Milwaukee Road 2400-2404 18764-18768 5308 1/1954
Illinois Central 9000-9037 18797-18834 5307 4/1954-6/1954
Wabash 484-489 18871-18876 5310 1/1954
Soo Line (Wisconsin Central) 2555 19084 5374 01/1955
Union Pacific 205-244 19091-19130 5320 1/1954
Union Pacific 130-204 19131-19205 5321 2/1954-4/1954
Great Northern 661-678, 656-660 19346-19368 5286 3/1954-4/1954
Great Northern 679-680 19369-19370 5324 5/1954
Illinois Central 9038-9041 19373-19376 5307 6/1954
Illinois Central 9042-9047 19377-19382 5341 5/1954
Louisville & Nashville 441-447 19383-19389 5266 3/1954
Southern Pacific (Texas & New Orleans) 400-410 19461-19471 5323 5/1954
Southern Pacific (Texas & New Orleans) 240-249 19472-19481 5334 5/1954
Southern Pacific (Texas & New Orleans) 280-283 19482-19485 5335 5/1954
Chicago & North Western 1711-1715 19508-19512 5337 6/1954
Georgia Railroad 1040-1042 19515-19517 5336 5/1954
Cleveland Union Terminal (New York Central) 5900-5903 19521-19524 5340 4/1954
Northern Pacific 200-203 19544-19547 5342 6/1954
Western Maryland 25-28 19548-19551 5344 5/1954
Union Pacific 245 19552 6531 4/1954
Bangor & Aroostook 76-80 19553-19557 5345 6/1954
Southern Pacific 5600-5602 19558-19560 5346 6/1954
Southern Pacific 5603 19564 5346 6/1954
Union Pacific 246-248 19565-19567 5347 6/1954
Milwaukee Road 2405-2415 19568-19578 5348 6/1954
Milwaukee Road 2416-2425 19579-19588 5352 6/1954
Milwaukee Road 2426-2431 19589-19594 5349 6/1954
Milwaukee Road 2432-2435 19595-19598 5351 6/1954
Milwaukee Road 2436-2439 19599-19602 5350 6/1954
Milwaukee Road 2440-2443 19603-19606 5353 6/1954
Chicago, Burlington & Quincy 270-289 19609-19628 5354 6/1954-7/1954
Grand Trunk Western 1751-1765 19665-19679 5343 8/1954
Grand Trunk Western 1766-1767 19680-19681 5355 8/1954
Florida East Coast 651-656 19762-19767 5373 11/1954
Illinois Central 9048-9054 19768-19774 5359 12/1954
Union Pacific 250-262 19775-19787 5361 8/1954
Union Pacific 263-294 19860-19896 5362 8/1954-9/1954
Union Pacific 295-299 19892-19893 5363 9/1954
Illinois Central 9055-9067 19897-19909 5359 12/1954
Soo Line (Wisconsin Central) 2550-2552 19910-19912 5364 12/1954
Soo Line (Wisconsin Central) 2400-2401 19913-19914 5366 12/1954
Soo Line (Wisconsin Central) 2402-2403 19963-19964 5366 12/1954
Southern Pacific (Texas & New Orleans) 417-428 19965-19976 5367 5/1955
Southern Pacific 5622-5625 19977-19980 5369 4/1955
Phelps Dodge Corp 21-22 19981-19982 5390 4/1955
Southern Pacific (Texas & New Orleans) 411-416 19992-19997 5368 10/1954
Florida East Coast 657-666 19998-20007 5373 11/1954
Soo Line (Wisconsin Central) 2553-2554 20011-20012 5364 12/1954
Soo Line 552 20013 5371 12/1954
Soo Line (Wisconsin Central) 2404-2409 20014-20019 5366 12/1954
Soo Line 404-406, 400-403 20020-20026 5370 12/54
Soo Line 550-551 20027-20028 5371 12/54
Milwaukee Road 2388-2399 20029-20040 5372 11/1954
Soo Line 407-410 20104-20107 5370 1/1955
Soo Line 553-556 20111-20114 5371 1/1955
Southern Pacific 5604-5621 20129-20146 5377 1/1955-3/1955
Illinois Central 9068-9102 20147-20181 5378 1/1955-3/1955
Chesapeake & Ohio 5901-5919 20183-20201 5379 12/1954
Missouri Pacific 4332-4371 20242-20281 5380 1/1955-4/1955
Illinois Central 9103-9117 20282-20296 5383 3/1955-4/1955
Northern Pacific 218-232 20305-20319 5384 6/1955
Northern Pacific 204-217 20336-20349 5386 2/1955-3/1955
Western Maryland 29-30 20355-20356 5387 2/1955
Northern Pacific 233-237 20370-20374 5384 6/1955
Baltimore & Ohio 747-752 20417-20422 5388 4/1955
Baltimore & Ohio 691-696 20423-20428 5392 4/1955
Baltimore & Ohio 675-690 20429-20444 5393 4/1955-5/1955
New York, Chicago & St Louis (Nickel Plate Road) 448-477 20453-20481 5396 6/1955-7/1955
New York, Chicago & St Louis (Nickel Plate Road) 477-479 20482-20484 5397 7/1955
Denver & Rio Grande Western 5901-5904, 5911-5914, 5921-5924 20515-20526 5398 5/1955-6/1955
Southern (Cincinnati, New Orleans & Texas Pacific) 6245-6249 20585-20589 5400 7/1955-8/1955
Southern (Georgia Southern & Florida) 8214-8215 20590-20591 5400 8/1955
Southern (Live Oak, Perry & Gulf) 302-303 20592-20593 5400 8/1955
Southern 2500-2501 20594-20595 5400 8/1955
Phelps Dodge Corporation 30-42 (Morenci Mine) 20596-20608 5401 8/1955
Northern Pacific 238-240 20641-20643 5384 8/1955
Northern Pacific 241-242 20644-20645 5403 8/1955
Chesapeake & Ohio 5929-5937 20646-20654 5402 8/1955
Electro-Motive (Demonstrator) 7257 (became Western Maryland #33) 20664 5452 9/1955
Chicago & North Western 1716-1718 20682-20684 5404 9/1955
Chicago & North Western 1719-1720 20685-20686 5410 9/1955
Western Pacific 725-730 20696-20701 5407 9/1955
Pennsylvania 7000-7049 20704-20753 5408 10/1955-12/1955
Western Pacific 731-732 20754-20755 5407 9/1955
Illinois Central 9118-9187 20756-20825 5409 12/1955-1/1956
Detroit, Toledo & Ironton 980-989 20833-20842 5411 12/1955
Great Northern 700-703 20843-20846 5412 12/1955
Chesapeake & Ohio 5938-5977 20847-20886 5413 8/1955-10/1955
Western Maryland 31-32 20887-20888 5414 9/1955
New York Central 5904-5927 20893-20916 5415 10/1955-11/1955
New York Central 5928-5945 20917-20934 5416 12/1955
New York Central 5946-5948 20951-20953 5416 12/1955
New York Central 5949-5973 20962-20986 5417 1/1956-2/1956
New York Central 5974-5998 20987-21011 5447 3/1956
Norfolk & Western 10-13 21012-21015 5418 9/1955
Northern Pacific 243 21020 5419 12/1955
Chesapeake & Ohio 5978-5997 21026-21045 5420 10/1955-11/1955
Soo Line (Wisconsin Central) 2410 21067 5423 1/1956
Soo Line (Wisconsin Central) 2556 21068 5433 1/1956
Seaboard Air Line 1900-1909 21069-21078 5424 11/1955
Great Northern 704-709 21083-21088 5427 4/1956
Northern Pacific 244-245 21089-21090 5454 2/1956
Northern Pacific 246-254 21091-21099 5425 2/1956
Chesapeake & Ohio 5998-6008 21182-21192 5426 12/1955
Chesapeake & Ohio 5920-5928 21193-21201 5426 12/1955
Milwaukee Road 2378-2387 21202-21211 5428 5/1956
Wabash 493-495 21212-21214 5429 9/1956
Wabash 492 21215 5440 9/1956
Wabash 490-491 21216-21217 5441 9/1956
Northern Pacific 261-268 21218-21225 5430 7/1956
Northern Pacific 269-274 21226-21231 5484 7/1956
Northern Pacific 275-284 21232-21241 5472 7/1956
Great Northern 710-711 21252-21253 5432 4/1956
Great Northern 681-687 21254-21260 5460 4/1956
Southern Pacific 5626-5719 21319-21412 5436 2/1956-5/1956
Southern Pacific (Texas & New Orleans) 429-438 21413-21422 5437 5/1956
Northern Pacific 255-260 21427-21432 5425 2/1956
Soo Line 411 21436 5438 5/1956
Soo Line 557-558 21437-21438 5439 5/1956
Louisville & Nashville 448-457 21439-21448 5442 2/1956
Grand Trunk Western 4442-4450 21449-21457 5443 5/1956-6/1956
Grand Trunk Western 4902-4906 21458-21462 5444 6/1956
Spokane, Portland & Seattle 150-153 21465-21468 5445 6/1956
Spokane, Portland & Seattle 154-155 21469-21470 5446 6/1956
Chesapeake & Ohio 6009-6033 21487-21511 5448 3/1956
Seaboard Air Line 1910-1921 21512-21523 7526 10/1955-11/1955
Chesapeake & Ohio 6034-6048 21524-21538 5448 4/1956
Santa Fe 726-731 21564-21569 5449 5/1956
Santa Fe 700-725 21570-21595 5450 5/1956
Western Maryland 34-35 21619-21620 5451 6/1956
Chesapeake & Ohio 6049-6082 21686-21719 5453 6/1956
Chesapeake & Ohio 6083-6088 21720-21725 5455 6/1956
Erie Railroad 1260-1265 21821-21826 5458 6/1956
Norfolk & Western 714-734 21833-21853 5459 7/1956
Pennsylvania 7050-7099 21855-21904 5461 10/1956-11/1956
New York, Chicago & St Louis (Nickel Plate Road) 484-485 21906-21907 5464 8/1956
New York, Chicago & St Louis (Nickel Plate Road) 480-483 21908-21911 5463 8/1956
New York, Chicago & St Louis (Nickel Plate Road) 486-509 21912-21935 5462 8/1956
Central of Georgia 160-165 22007-22012 5465 11/1956
Chicago & Eastern Illinois 233-234 22013-22014 5466 6/1956
Chicago & Eastern Illinois 235-236 22015-22016 5471 2/1957
Chesapeake & Ohio 6109-6143 22017-22051 5467 9/1956
Chesapeake & Ohio 6144-6158 22052-22066 5521 11/1956-12/1956
Western Maryland 36 22067 5468 10/1956
Denver & Rio Grande Western 5931-5934, 5941-5944, 5951-5954 22068-22079 5469 7/1956-8/1956
Phelps Dodge Corporation 23 (New Cornelia Branch Mine) 22080 5470 9/1956
Chesapeake & Ohio 6089-6108 22090-22109 5473 6/1956-7/1956
New York, New Haven & Hartford (New Haven) 1200-1229 22110-22139 5474 7/1956-8/1956
Norfolk & Western 735-761 22158-22184 5478 12/1956, 2/1957
Norfolk & Western 762-767 22185-22190 5486 2/1957
Baltimore & Ohio 6447-6500 22191-22244 5477 8/1956-10/1956
Baltimore & Ohio 6501-6510 22245-22254 5489 10/1956
Baltimore & Ohio 3413-3418 22255-22260 5490 8/1956-10/1956
Illinois Central 9188-9199, 9220-9257 22273-22322 5480 12/1956-1/1957
Illinois Central 9200-9219 22323-22342 5517 1/1957
Southern (New Orleans & North Eastern) 6898-6899 22414-22415 5483 10/1956
Meridian & Bigbee 102 22416 5539 4/1957
Baltimore & Ohio 3419-3425 22418-22424 5490 10/1956
Western Maryland 37-38 22425-22426 5468 10/1956
Great Northern 688-699 22468-22479 5487 4/1957
Great Northern 712 22480 5518 4/1957
Louisville & Nashville 553-554 22492-22493 5491 1/1957
Louisville & Nashville 515-522 22494-22501 5494 12/1956
Louisville & Nashville 458-459 22502-22503 5495 12/1956
Winston-Salem Southbound 1501-1502 22520-22521 5492 4/1957
Winston-Salem Southbound 1503-1504 22522-22523 5531 4/1957
Texas & Pacific (Missouri Pacific) 1131-1136 22524-22529 5493 3/1957
Chesapeake & Ohio 6159-6166 22540-22547 5496 9/1956
Chesapeake & Ohio 6167-6208 22550-22591 5509 11/1956-12/1956
Pennsylvania 7100-7104 22596-22600 5461 11/1956
Belt Railway of Chicago 480 22601 5497 6/1956
Belt Railway of Chicago 481 22602 5498 6/1956
Seaboard Air Line 1954-1978 22625-22649 5499 10/1956
New York Central 5999-6010 22666-22677 5500 10/1956
New York Central 6011-6028 22678-22695 5520 12/1956
Clinchfield 917-918 22696-22697 5501 12/1956
Detroit, Toledo & Ironton 990-992 22698-22700 5502 2/1957-3/1957
Northern Pacific 305-316 22708-22719 5504 2/1957
Northern Pacific 317-344 22720-22747 5505 7/1957-8/1957
Northern Pacific 285-304 22768-22787 5524 2/1957
Great Northern 713-722 22788-22797 5518 4/1957, 6/1957
Rock Island 1312-1321 22798-22807 5506 5/1957
Minneapolis & St Louis 600-602 (rated at 1,350 horsepower) 22820-22822 7537 11/1956
Butte, Anaconda & Pacific 104-105 22823-22824 5508 3/1957
Central Vermont 4923-4927 22829-22833 5510 3/1957
Grand Trunk Western 4558-4559 22834-22835 5511 3/1957
Central Vermont 4547-4557 22836-22846 5512 3/1957
Grand Trunk Western 4539-4546 22847-22854 5513 3/1957
Grand Trunk Western 4907-4922 22855-22870 5514 1/1957
Minneapolis & St Louis 603-605 (rated at 1,350 horsepower) 22881-22883 7540 3/1957
Southern Pacific (Texas & New Orleans) 439-448 22893-22902 5515 12/1956
Southern Pacific 5730-5799 22912-22981 5516 1/1957-4/1957
Minneapolis & St Louis 607, 606, 608 (rated at 1,350 horsepower) 22982-22984 7541 7/1957, 10/1957
Baltimore & Ohio 6511-6562 22985-23036 5519 5/1957-7/1957
Baltimore & Ohio 6563-6570 23037-23044 5543 7/1957
Norfolk & Western 768-797 23045-23074 5522 4/1957-5/1957
Seaboard Air Line 1922-1925 23095-23098 7533 9/1956
Soo Line (Wisconsin Central) 2411-2413 23123-23125 5527 5/1957
Soo Line 412-414 23126-23128 5528 5/1957
Florida East Coast 667-676 23129-23138 5529 2/1957
Santa Fe 736-751 23139-23154 5530 4/1957
Central of Georgia 166-170 23185-23189 5533 4/1957
Boston & Maine 1700-1709 23198-23207 7546 2/1957-3/1957
Boston & Maine 1710-1726 23208-23224 7546 9/1957-12/1957
Boston & Maine 1727-1749 23225-23247 7549 4/1957-9/1957
Phelps Dodge Corporation 43 (Morenci Mine) 23250 5534 4/1957
Norfolk & Western 798-812 23251-23265 5535 5/1957
Chicago & Eastern Illinois 237-238 23268-23269 5471 2/1957
Western Maryland 39-40 23270-23271 5537 4/1957
Pennsylvania 7105-7144 23305-23344 5541 5/1957-6/1957
Butte, Anaconda & Pacific 106-107 23355-23356 5508 3/1957
Chesapeake & Ohio 6209-6238 23368-23397 5542 6/1957-7/1957
Santa Fe 732-735 23467-23470 7544 2/1957
Chesapeake & Ohio 6239-6263 23501-23525 5544 8/1957
Milwaukee Road 2368-2377 23527-23536 5545 1/1958
Chicago & North Western 1725-1756 23542-23573 7542 3/1957-2/1958
New York Central 6046-6075 23579-23608 5546 8/1957-9/1957
Baltimore & Ohio 6571 23641 8046 5/1957
Baltimore & Ohio 6498 23642 8045 5/1957
Rock Island 1322 23643 8047 5/1957
New York Central 6041-6045 23644-23648 5548 4/1957
Union Pacific 300-349 23656-23705 5552 7/1957-10/1957
New York, Chicago & St Louis (Nickel Plate Road) 448, 496-497, 503 23756-23760 8048 6/1957
New York, Chicago & St Louis (Nickel Plate Road) 482 23760 8049 06/57
Seaboard Air Line 1926-1929 23778-23781 7557 11/1957
Illinois Central 9300-9369 23800-23869 5553 12/1957-1/1958
Western Maryland 41-45 23906-23910 5554 6/1957
Pennsylvania 7145-7159 23943-23957 5566 11/1957
Pennsylvania 7160-7184 23958-23982 5569 11/1957
Mississippi Export 60 23985 5557 10/1957
Central Vermont 4928-4929 23995-23996 5558 12/1957
Northern Pacific 345-350 24014-24019 5559 1/1958
Northern Pacific 345-357 24020-24026 5561 1/1958
Northern Pacific 358-371 24048-24061 5560 6/1958-9/1958
St. Louis Southwestern Railway (Cotton Belt) 820-825 24075-24080 5563 10/1957
Great Northern 900-903 24081-24084 7561 2/1958
Great Northern 723-727 24085-24089 7562 10/1957-2/1958
Great Northern 728-732 24102-24106 5565 4/1958
Pennsylvania 7185-7229 24217-24261 5570 11/1957-12/1957
Pennsylvania 7230-7269 24282-24321 5556 10/1959-12/1959
Baltimore & Ohio 6572-6598 24356-24382 5568 1/1958-2/1958
Norfolk & Western 813-842 24436-24465 5571 3/1958-6/1958
Northern Pacific 372-375 24472-24475 5560 4/1958
New York, Chicago & St Louis (Nickel Plate Road) 510-529 24501-24520 5578 3/1958
Louisville & Nashville 437 24572 8051 5/1958
Midland Valley 152-153 24680-24681 8052 4/1958
Norfolk & Western 813, 817 24734-24735 8053 6/1958
Norfolk & Western 799-800, 805 24736-24738 8054 7/1958
Belt Railway of Chicago 471 24739 8055 6/1958
Chicago & Eastern Illinois 221 24753 8056 8/1958
Minneapolis & St Louis 700-713 24755-24768 5580 9/1958-10/1958
Texas-Mexican 853 24771 5581 10/1958
Norfolk & Western 620-663 24772-24815 5582 10/1958-2/1959
Norfolk & Western 664-699, 843-851 24816-24860 5586 2/1959-5/1959
Norfolk & Western 645-699, 843-894 24861-24903 5587 5/1959-9/1959
Norfolk & Western 895-914 24904-24923 5588 9/1959
Norfolk & Western 506-521 24948-24963 5583 11/1958-12/1958
Grand Trunk Western 4134-4138 24964-24968 5584 11/1958
Grand Trunk Western 4930-4933 24969-24972 5585 11/1958
St. Louis Southwestern Railway (Cotton Belt) 826-831 25016-25021 5590 02/59
Illinois Central 9370-9389 25022-25041 5591 12/1958-1/1959
Chicago & North Western 1757-1769 25047-25059 7568 1/1959-2/1959
Great Northern 912-913, 904-908, 914, 909-911, 915 25060-25071 7569 2/1959-4/1959
New York, Chicago & St Louis (Nickel Plate Road) 530-534, 800-814 25073-25092 5592 1/1959-2/1959
Southern Pacific 5800-5844 25100-25144 5595 3/1959-4/1959
Southern Pacific (Texas & New Orleans) 449-458 25145-25154 5596 2/1959-3/1959
Chicago & North Western 1770-1772 25164-25166 7568 1/1959-3/1959
Rock Island 1323-1330 25213-25220 5599 3/1959-4/1959
Milwaukee Road 280-331 25275-25326 7575 3/1959-7/1959
Rock Island 1331 25344 8060 4/1959
Texas & Pacific (Missouri Pacific) 1137-1144 25345-25352 5601 5/1959
Rock Island 1332 25356 5599 4/1959
Grand Trunk Western 4139 25433 8062 5/1959
Lehigh Valley 300-301 25434-25435 7577 10/1959
Kansas City Southern 163-165 25437-25439 5604 5/1959
Central Railroad of New Jersey 1531-1532 (rated at 1,500 horsepower) 25447-25448 8063 7/1959
Chicago & Eastern Illinois 229 (rated at 1,500 horsepower) 25460 8064 6/1959
Chicago & North Western 1773 25466 8065 8/1959
Great Northern 734, 733 (rated at 1,500 horsepower) 25467-25468 8066 8/1959
Southern Pacific 5872-5891 25631-25650 5608 8/1959-9/1959
Seaboard Air Line 1979 25717 5611 10/1959

Export

Owner Road Number(s) Serial Number(s) Order Number(s) Completion Date
Ferrocarril Nacional de México 6602 22905 701422 10/1956
Venezuelan National Railways 001-006 23791-23796 701621-701626 9/1957-10/1957
Araraquara Railway (Brazil) 1001-1005 24009-24013 701653-701657 11/1957
Ferrocarril Nacional de México 7101-7107 24702-24708 701889-701895 7/1958-8/1958
Southern Peru Copper Company 20-23 24740-24743 701943-701946 10/1958-11/1958
Ferrocarril Nacional de México 7101-7102 (2nd) 25444-25445 702023-702024 6/1959

General Motors Diesel (GMD)

Owner Road Number(s) Serial Number(s) Order Number Completion Date
Quebec, North Shore & Labrador 124-133 A420-A429 C177 4/1954-6/1954
Toronto, Hamilton & Buffalo 401-403 A569-A571 C174 2/1954-3/1954
Canadian National 1724-1750 A643-A669 C184 2/1955-4/1955
Canadian Pacific 8483-8500 A681-A698 C186 10/1954-1/1955
Canadian Pacific 8501-8521 A699-A719 C187 10/1954-1/1955
Quebec, North Shore & Labrador 134-148 A723-A737 C188 4/1955-7/1955
Quebec, North Shore & Labrador 149 A739 C188 7/1955
Canadian Pacific 8522-8529 A765-A772 C192 7/1955-8/1955
Canadian Pacific 8530-8546 A773-A789 C193 5/1955-7/1955
Canadian National 2000-2024 A805-A829 C195 9/1955-5/1956
Canadian National 4476-4488 A833-A845 C195 5/1956-6/1956
Canadian National 4489-4495 A847-A853 C195 6/1956-7/1956
Ontario Northland 1600-1601 A886-A887 C203 7/1956
Quebec, North Shore & Labrador 150-169 A929-A948 C209 4/1956-6/1956
Canadian Pacific 8611-8635 A951-A975 C211 7/1956-10/1956
Canadian National 4502-4538 A977-A1013 C213 11/1956-1/1957
Canadian National 4496-4501 A1014-A1019 C214 11/1956
Ontario Northland 1602-1605 A1060-A1063 C219 1/1957
Quebec, North Shore & Labrador 170-175 A1064-A1069 C220 3/1957-4/1957
New York Central 6029-6038 A1074-A1083 C221 4/1957
New York Central 6039-6040 A1084-A1085 C222 4/1957
Midland of Manitoba 2 A1091 C224 3/1957
Canadian Pacific 8636-8708 A1092-A1164 C225 1/1957-11/1957
Canadian National 4588-4609 A1240-A1261 C233 6/1957-7/1957
Canadian National 4100-4133 A1262-A1295 C235 7/1957-10/1957
Canadian National 4560-4587 A1296-A1323 C234 10/1957-12/1957
Canadian National 4588-4601 A1327-A1340 C238 12/1957-1/1958
Canadian National 4228-4244 A1341-A1357 C239 2/1958-3/1958
Northern Alberta 201-205 A1415-A1419 C226 12/1957
Canadian Pacific 8801-8823 A1453-A1475 C247 1/1958-3/1958
Canadian National 4245-4270 A1511-A1536 C250 4/1958-5/1958
Northern Alberta 206-210 A1537-A1541 C252 6/1958
Canadian National 4271-4339 A1628-A1696 C257 1/1959-7/1959
Canadian Pacific 8825-8839 A1716-A1730 C260 7/1959-8/1959
Canadian National 4147-4156, 4340-4352 A1765-A1787 C263 09/1959-10/1959
Canadian National 4353 A1808 C263 11/1959
Quebec Cartier Mining 1-9 A1814-A1822 C268 5/1960
Quebec, North Shore & Labrador 176-177 A1918-A1919 C276 5/1960
Algoma Central & Hudson Bay 171-172 A2018-A2019 C291 8/1963

GP9B

Total Built = 165

Owner Road Numbers Serial Numbers Order Number Completion Date
Union Pacific 130B-204B 19206-19280 5321 2/1954-4/1954
Union Pacific 300B-349B 23706-23755 5552 9/1957-10/1957
Pennsylvania 7175B-7184B 23997-24006 5570 11/1957
Pennsylvania 7185B-7204B 24262-24281 5570 11/1957-12/1957
Pennsylvania 7230B-7239B 24322-24331 5556 10/1959-12/1959

Rio Grande GP9 #5921 at Pueblo, Colorado during the 1970s. American-Rails.com collection.

Most GP9s (and GP7s) were built to operate short hood forward, although this was not always the case.  As Bob Hayden notes in "Diesel Locomotives: Cyclopedia, Volume 2 (Model Railroader)" like the New York Central and Canadian National specified long hood forward operation.  In addition, many roads ordered both GP7s and GP9s with dual control stands. 

Interestingly, both the PRR and Union Pacific requested cabless GP9Bs; the former picked up 40 examples while the latter acquired an impressive 125.  One of the PRR's units can be seen in the above photo.

The GP9's extreme versatility is, of course, what made them so successful, and many continue to be found today in freight service on both short lines and regionals (as well as museums and tourist lines).

3672739482893572hu67919936872878.jpgWestern Pacific GP9 #708, F7A #921, and a GP40 appear to be tied down with their train at Milpitas, California, circa 1979. Mike Bledsoe photo. American-Rails.com collection.

Sources

  • Marre, Louis A. Diesel Locomotives: The First 50 Years, A Guide To Diesels Built Before 1972.  Milwaukee: Kalmbach Publishing Company, 1995.
  • Pinkepank, Jerry A. Diesel Spotter's Guide.  Milwaukee: Kalmbach Publishing Company, 1967.
  • Schafer, Mike. Vintage Diesel Locomotives. Osceola: MBI Publishing, 1998.
  • Solomon, Brian. American Diesel Locomotive, The. Osceola: MBI Publishing, 2000.
  • Solomon, Brian.  EMD Locomotives.  Minneapolis: MBI Publishing Company, 2006.
  • Trzoniec, Stanley W.  Vintage & Modern Diesel Locomotives: Prime Movers Of America.  Minneapolis:  Voyageur Press, 2015.

SteamLocomotive.com

Wes Barris's SteamLocomotive.com is simply the best web resource on the study of steam locomotives. 

It is difficult to truly articulate just how much material can be found at this website. 

It is quite staggering and a must visit!