EMD "BL2" Locomotives: Specs, Roster, History

Last revised: December 18, 2024

Electro-Motive's BL2 was the stepping stone for the company's highly successful General Purpose (GP) series.

The locomotive was a derivative of the F3, EMD's most successful cab model until the F7 debuted in 1949. The builder felt a locomotive offering crews much better visibility for switching operations would be successful in local branch line service.

However, the road-switcher was not a new concept, and not even an EMD invention. In 1941 Alco had pioneered the design with the RS1, and the series became the builder's most successful, peaking with the RS3.

Unfortunately, demand for the BL2 never materialized and EMD ended production after only a year. Nevertheless, the company learned from the model's failure and followed up with the incredibly successful GP series.

Today, at least a half-dozen BL2s remain preserved with a few still operational. A great location to see one in action is at the West Virginia Central Railroad in Elkins, West Virginia which maintains an original Western Maryland unit, #82.

This locomotive, which still wears its WM "Fireball" livery, can be found pulling both public excursions and working freight service when-needed.

Photos

Electro-Motive's BL-1 demonstrator, #499, soon after it was completed in February of 1948. This unit went on to become Chicago & Eastern Illinois #1602.

Overview

Electro-Motive went its own way in the road-switcher market. Despite Alco and Baldwin witnessing success, EMD remained reluctant (aside from introducing the NW3 and NW5 light road-switchers to compete against the RS1, both of which sold poorly).

The streamlined F series was designed for general road service and ill-equipped to perform switching chores or branch line work; engineers had a difficult time seeing crewman on the ground and the locomotives contained no footboards.

The success of its cab models, and the realization railroads still needed a locomotive in branch line service to complete dieselization, convinced EMD to push forward redeveloping its F3 for just such assignments.

In his book, "Vintage Diesel Locomotives," author Mike Schafer points out that in the late 1940s, 80 percent of the U.S. rail network at that time was comprised of branch or secondary lines.

To provide crews increased visibility, Electro-Motive redesigned the F3 by cutting down the width of the long trailing hood and installing windows to the rear of the cab for bi-directional viewing. In doing so, EMD believed this would correct sightline problems inherent with its cab designs.

Rock Island BL2 #426, along with a mate and other units, lay over at the 22nd Street Yard in Chicago, Illinois, circa 1960. American-Rails.com collection.

Specifications

In his book, "EMD Locomotives," author Brian Solomon notes EMD dubbed the model the BL1, for Branch Line. The builder also placed footboards on the front and rear pilots, making switching work easier for ground crewmen.

Curiously, despite its intentions as a branch line/switching locomotive, EMD still retained streamlining characteristics to the BL1's carbody, in part because it was offered with optional steam generators for passenger service.

In doing so, however, the locomotive still lacked exterior walkways. In addition, engineers continued having difficulty easily seeing ground crewmen, and vice versa.

The initial BL1 demonstrator, #499, completed in February, 1948 differed only from the later BL2 by featuring an air-powered throttle and no MU capabilities.

Chicago & Eastern Illinois went on to purchase the demonstrator but ultimately few railroads found interest in this unique EMD design; only 58 were sold.

Data Sheet

Entered Production	2/1948 (BL1 Demonstrator #499)
Years Produced	2/1948 - 5/1949
Engine	567B
Engine Builder	GM
Horsepower	1500
RPM	800
Cylinders	16
Length (End Of Front And Rear Platforms)	54' 0"
Height (Top Of Rail To Top Of Cab)	14' 6"
Width	10' 7 ½"
Weight	230,000 Lbs
Fuel Capacity	800 Gallons
Air Compressor	Gardner-Denver
Air Compressor Model	WBO
Air Brake Manufacturer	Westinghouse
Air Brake Schedule	24L
Trucks	B-B
Truck Type	Blomberg
Truck Wheelbase	9'
Wheel Size	40"
Traction Motors	D17B/D27B (4), GM
Primary Generator	D12/D12A/D14, GM
Auxiliary Generator	Delco (A8102)
Alternator	D14
MU (Multiple-Unit)	Yes
Dynamic Brakes	Yes
Gear Ratio	62:15
Tractive Effort (Starting)	55,000 Lbs at 25%
Tractive Effort (Continuous)	40,000 Lbs at 9.3 mph
Top Speed	65 mph

Production Roster

Total Built = 59

Owner	Road Numbers	Serial Numbers	Order Number	Completion Date
Electro-Motive/Demonstrator (BL1)	499 (became Chicago & Eastern Illinois #1602)	7428	E1240	2/1948
Chicago Indianapolis & Louisville	30-33	4449-4452	E975	4/1948
Chesapeake & Ohio	80-85	4724-4729	E822	6/1948-7/1948
Chicago, Indianapolis & Louisville (Monon)	34-35	5243-5244	E975	4/1948
Boston & Maine	1550-1553	5259-5262	E889	7/1948, 9/1948
Missouri Pacific	4104-4111	5451-5458	E906	5/1948, 9/1948
Florida East Coast	601-606	5528-5533	E914	10/1948-12/1948
Western Maryland	81-82	5921-5922	E960	10/1948
Chicago & Eastern Illinois	1600-1601	6012-6013	E966	12/1948
Rock Island	425-429	6134-6138	E974	12/1948-1/1949
Chesapeake & Ohio	1840	6275	E994	10/1948
Chesapeake & Ohio	1841-1847	6276-6281	E994	1/1949-3/1949
Bangor & Aroostook	550-555	8161-8166	E1195	3/1949-4/1949
Chicago, Indianapolis & Louisville (Monon)	36-38	8420-8422	E1253	5/1949
Bangor & Aroostook	556-557	8616-8617	E1195	4/1949

Florida East Coast BL2 #605. This was one of six the FEC owned. No date or location listed. American-Rails.com collection.

In his book, "Diesel Locomotives: The First 50 Years, A Guide To Diesels Built Before 1972," author Louis Marre notes that of these Boston & Maine, Chesapeake & Ohio, and Rock Island operated steam generator-equipped BL2s for passenger service.

The Rock installed these after delivery while the C&O's variants had been ordered by predecessor Pere Marquette Railway before the two roads officially merged in June, 1947.

Postscript

Despite the BL2's failure from a sales perspective, EMD remained confident a "branch line" model would be successful. The builder went back to the drawing board and cataloged a design which more closely resembled the road-switchers Alco and Baldwin had been producing since the early/mid 1940s.

The GP7 of 1949 featured an offset cab, creating a short hood at one end and trailing long hood. With walkways surrounding the locomotive, crews both in the cab and on the ground could see one another much more easily. In addition, with its 1,500 horsepower the GP7 could be utilized in all types of applications, from switching assignments to general road service.

The model became one of EMD's best sellers and one of the best known first-generation locomotive models of all time. The following GP9 of 1954 sold even better and railroads eventually moved away entirely from the builder's classic streamlined designs.

Preservation

Despite the few number built, and several later traded-in to EMD on newer models, a handful of BL2s were eventually preserved.

Additionally, at least four are still operational; Western Maryland #82 at the West Virginia Central/Durbin & Greenbrier Valley, Monon #32 at the Kentucky Railway Museum, the Stourbridge Line in Pennsylvania operates Bangor & Aroostook (BAR) #54.

Others preserved include WM #81 at the Baltimore & Ohio Railroad Museum, BAR #56 at the National Railroad Museum in Green Bay, and BAR #57 at the Cole Transportation Museum in Maine.