GE "B39-8" Locomotives


The GE B39-8 (also referred to as the 8-39B) was one of the builder's most powerful four-axle models it ever produced, as well as one of the last. The design, built during the mid-1980s, had lukewarm success although only two railroads ultimately purchased the model as most were bought by a leasing firm. By the time of the model's construction most had lost nearly all interest in four-axle designs in main line freight service for a few reasons; first, six-axle locomotives offered more tractive effort with little loss in speed (another level of redundancy) and second, many still had first and early second generation motive power that could be used without the need of buying new. 

General Electric would debut only one other four-axle model after the B39-8, which likewise saw only marginal sales numbers.  Manufacturers by this era realized four-axle designs were no longer a profitable business model and stuck solely with six-axle locomotives. Today, most of the original fleet of these locomotives remain in use on a number of different lines.

A trio of nearly new Southern Pacific B39-8's have the "Superbowl Special" heading northbound/eastbound along San Pablo Bay near Pinole, California in January, 1988. Roger Puta photo.








The GE B39-8 saw a bit of change to the builder's carbody designs. The company continued to carry the standard rectangular design with flush lines (which dated back to the Universal series) and its now classic rear, flared radiator. The "Dash 8s" also have slightly longer nose than earlier models. Perhaps the most noticeable exterior difference with the B39-8 (and all "Dash 8s") was the roughly 10-foot "bulge" directly behind the cab that gave the roof-line a very irregular shape. This new featured simply housed the dynamic brakes. The design continued to use the same classification, which began with the Universal models.

General Electric's LMX Leasing division included the largest fleet of B39-8's (102). Here, a pair of B39-8E's are westbound on the Burlington Northern (former Chicago, Burlington & Quincy) just west of Oregon, Illinois on October 21, 1989. Brian Rackley photo.

For instance, the "B" referred to the unit having a B-B truck setup (two axles per truck) while the "39" referred to it having 3,900 horsepower. The "8" reference simply meant it was a model of GE's "Dash 8" series. The locomotive used GE's standard 4-cycle, 16-cylinder FDL prime mover featuring its model 752AF traction motors, which by the 1980s had become one of its major marketing features. As a four-axle "Dash 8" locomotive the model could produce 68,500 pounds of starting tractive effort and 68,000 pounds continuous (about the same as the later B40-8W). Of note, the design was one of GE's final cataloged models not to have the later FRA-mandated Safety Cab as a standard feature. The Norfolk Southern, for instance, held out on having its locomotives include this cab until ordered to do so.

Railcar Custom Leasing, LLC (RLCX) B39-8 #8513 and another lease unit power CSX autorack freight Q216 eastbound past former Baltimore & Ohio's VN Tower at Nova, Ohio on July 25, 2004. Wade Massie photo.

Perhaps the most noticeable difference in later B39-8s, from its earlier design and also the B32-8, was the change to the rear radiator air intakes which were now canted (i.e., angled) instead of being flush with the carbody. Nearly all future GE models featured this angular design to their air intakes, which carried on to this day. Production of the design began in early 1984 and only two Class Is purchased the model, AT&SF (3) and Southern Pacific (40). Most, 102 (listed as a B39-8E), were purchased by Locomotive Management Services, which as their name suggests, leases out motive power to railroads. With the one GE demonstrator built overall 146 B39-8s were constructed.  Today, numerous regionals and short lines still operate the model, and they can also be found in Canada and South America. Some of the lines that use the locomotive include the Providence & Worcester; Montreal, Maine & Atlantic; Ferrocaril Central Andino (Peru); and the Nashville & Eastern.

LMX Leasing B39-8E #8504 leads trailers through Milledgeville, Illinois on the Burlington Northern on April 30, 1988. Brian Rackley photo.

GE B39-8 Production Roster

Owner Road Number(s) Quantity Date Built
General Electric808 (B39-8E)11984
General Electric Leasing (LMX)8500-8599, 8503 (2nd), 8540 (2nd) (B39-8E)1021988
Santa Fe7400-740231984
Southern Pacific8000-8039401987


LMX Leasing B39-8E #8542 runs the Burlington Northern (ex-Chicago, Burlington & Quincy) as it hustles trailers eastbound west of Flag Center, Illinois on the morning of February 27, 1988. Note the fuel tender behind the locomotive, a BN trademark of that era. Brian Rackley photo.

For more reading about General Electric diesel locomotives there are a few books written by noted historian Brian Solomon worth mentioning which highlight the history and background of the company.  First, is GE Locomotives, a title that provides a thorough history of its locomotive line from the earliest days of building electrics and experimental diesels to the latest models built through the early 2000s.  Second, is GE And EMD Locomotives: The Illustrated History, which generally highlights the history of both company's designs.  As with virtually all of Mr. Solomon's you can expect well-written titles with large, crisp, and sharp photographs featured throughout.




  1. Home
  2.  ›
  3. Diesel Locomotives
  4.  ›
  5. B39-8

Header Photo: Drew Jacksich



Researching Rights-Of-Way

A popular pastime for many is studying and/or exploring abandoned rights-of-way.  Today, there are tens of thousands of miles scattered throughout the country.  Many were pulled up in the 1970's and 1980's although others were removed long before that.  If you are researching active or abandoned corridors you might want to check out the United States Geological Survery's (USGS) Historical Topographic Map Explorer.  It is an excellent resource with thousands of historic maps on file throughout the country.  Just type in a town or city and click on the timeline of maps at the bottom of the page!



Studying Diesels

You will be hard pressed at finding a better online resource regarding diesel locomotives than Craig Rutherford's TheDieselShop.us.  The website contains everything from historic (fallen flags) to contemporary (Class I's, regionals, short lines, and even some museums/tourist lines) rosters, locomotive production information, technical data, all notable models cataloged by the five major builders (American Locomotive, Electro-Motive, General Electric, Fairbanks-Morse, and Baldwin), and much more.  A highly recommended database!



Electro-Motive Database

In 1998 a gentleman by the name of Andre Kristopans put together a web page highlighting virtually every unit every out-shopped by General Motors' Electro-Motive Division.  Alas, in 2013 the site closed by thankfully Don Strack rescued the data and transferred it over to his UtahRails.net site (another fine resource).  If you are researching anything EMD related please visit this page first.  The information includes original numbers, serials, and order numbers.