GE Dash 8-40CW

The GE C40-8W is a 6-axle diesel-electric locomotive built by GE Transportation Systems from 1989 to 1994. Often referred to as the Dash light series, it is part of the GE Dash 8 Series of freight locomotives. This locomotive model is distinguished from the predecessor Dash 8-40C by the addition of a newer "wide" or "safety" cab. A cowl-bodied version of this locomotive, built only for the Canadian market, was the GE Dash 8-40CM.

GE C40-8W
Conrail 6114, a Dash 8-40CW, leads a train westbound out of Altoona, Pennsylvania, in 1993.
Type and origin Power type Diesel-electric Builder GE Transportation Systems Model C40-8W Build date 1989 – 1994 Total produced 756
Specifications Configuration: ​  • AAR C-C Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Driver dia. 40 in (1,016 mm) Length 70 ft 8 in (21.54 m) Width 10 ft 2 in (3.10 m) Height 15 ft 4 in (4.67 m) Fuel capacity 5,000 US gal (19,000 L; 4,200 imp gal) Lubricant cap. 410 US gal (1,600 L; 340 imp gal) Coolant cap. 380 US gal (1,400 L; 320 imp gal) Prime mover GE 7FDL16 Engine type V16 diesel Alternator GE GMG187 Traction motors 6x GE 752AG or 752AH Cylinders 16
Performance figures Maximum speed 70 mph (113 km/h) Power output 4,000 hp (3,000 kW) some uprated to 4,100 hp (3,100 kW), some uprated to 4,135 HP Tractive effort 108,600 lbf (483 kN)
Career Operators See table Locale North America Disposition Some still in service as of 2021, most in storage, or have been retired and/or sold to other railroads or leasing companies, or scrapped.

History

GE C40-8W 7913 CSX Sand Lake Road station SunRail in Orange County, Florida

The first Dash 8-40CW, 9356, was built for the Union Pacific railroad in December 1989. In total, GE would build 756 Dash 8-40CWs. The Dash 8-40CW was succeeded by the Dash 9-44CW in 1994.

Like most GE locomotives, the Dash 8-40CW saw continuous upgrades over the course of its production. Later model Conrail units were built with split cooling systems for the turbocharger intercooler and engine cooling (previous Dash 8 series had both on the same cooling system). The later units delivered to Conrail in 1993 and 1994 were equipped with GE's Integrated Function Displays (IFD). The IFDs are LCD displays that provide the engineer with the same information previously provided by analog gauges, as well as integrating distance counter and End of Train Device telemetry functions.

As of 2021, while many C40-8W locomotives are still in service, most are either being stored in "dead lines" by Class I railroads, have been retired and/or sold to other railroads or leasing companies, or have been cut up for scrap.

Technical

The Dash 8-40CW is powered by a 4,000-horsepower (3,000 kW) V16 7FDL diesel engine driving a GE GMG187 main alternator. The power generated by the main alternator drives six GE 752AG or 752AH Direct Current traction motors, each with a gear ratio of 83:20 and connected to 40-inch (1,016 mm) wheels which allow the Dash 8-40CW a maximum speed of 70 mph (110 km/h).

Depending on customer options, the Dash 8-40CW carries approximately 5000 US gallons (18927 L) of diesel fuel, 410 US gal (1,552 L) of lubricating oil, and 380 gallons (1,438 L) of coolant. The Dash 8-40CW has a maximum tractive effort of 108,600 lbf (483,000 N) at 11 mph (18 km/h) with the 83:20 gearing. Overall dimensions for the Dash 8-40CW are 70 ft 8 in (21.54 m) in length, 15 ft 4 in (4.67 m) in height and 10 ft 2 in (3.10 m) in width.

Rebuilds

GE Dash 8-41CW (C41-8W), UP 9481

The General Electric Dash 8-41CW or Dash 8-41W (C41-8W) is a variation with the same 16-cylinder engine upgraded to 4,135 hp (3,083 kW). 154 were produced between 1993 and 1994 for both the Union Pacific and Santa Fe (ATSF) railroads, and some Dash 8-40CW units were also uprated to Dash 8-41CW standard by the railroads. Since no four-axle versions of this unit were built, the "C" designation (indicating trucks with three powered axles, or C-C) is often omitted.

The GE Dash 8.5-40CW was a 6-axle 4,000 hp (2,800 kW) diesel-electric locomotive rebuilt by Norfolk Southern. The first locomotive started its rebuild in 2012. Only one unit is on the active roster, and it is stored. The units will be rebuilt with the Norfolk Southern-designed wide-nose RLS cab which meets current FRA crashworthiness standards. The rebuild will also include the installation of locomotive speed limiter (LSL), and cab signals and other electronics upgrades. NS discontinued the rebuild program in April 2016 due to repeated failures, and even retired these locomotives in April 2020.

The GE C40-8WM was an experimental rebuild program done by GE in partnership with CSX at GE's Locomotive plant at Erie, PA in late 2016 and early 2017 to see if they were worth rebuilding. The program consisted of 10 C40-8Ws from CSX, #'s 7771, 7774, 7799, 7801, 7807, 7811, 7786, 7787, 7779 & 7780, the units were rebuilt with updated prime movers, new cab interiors, new control system (upgrade to CCA from IFC), installation of PTC equipment, fresh repaint, body work as needed, addition of shutters to the radiator to help more accurately control the engine temperature, and a few other refurbs.

Current and former owners

Railroad	Quantity	Road numbers	Notes
Atchison, Topeka and Santa Fe Railway	152	800–951	"Super Fleet" 927–951 are model C41-8W. Passed on to BNSF following the BN/ATSF merger in 1996.
BNSF Railway	152	800–951	800–866 sold to CN. 867–951 still on property, but most are currently in storage.
Canadian National	67	2098–2099, 2135–2199	Former BNSF 800–866. Originally ATSF 800–866. 2150 donated to BCIT - Delta, BC, CA.
Conrail	236	6050–6285	Split between CSX and NS following the split up of Conrail on June 1, 1999; Nos. 6266–6285 are ex-LMSX Nos. 740–759. Unit 6096 was destroyed in a wreck in January 1999.
CSX Transportation	375	7300–7396, 7650–7917, 7918–7929	Classed as CW40-8. 7300–7396 originally bought by Conrail. 7918–7929 originally bought by LMSX, 7300-7396 have been retired and sold to GECX leasing. 7650-7929 are mostly still in service, however, some are in storage or have been sold. Units 7655, 7727, 7797, 7835, 7875, 7898 reacquired in 2022 following Pan Am acquisition. Unit 7783 wrecked and retired in 2011.
Illinois Central	12	2455–2466	Bought from LMSX. Conrail Blue paint with CN markings and IC sublettering. Some have been repainted into standard CN paint. Most units retired and scrapped 2022–23, except 2466
Locomotive Management Services (LMSX)	60	700–759	Conrail lease units. Split between CSX, NS, and IC., Nos. 740–759 to Conrail Nos. 6266–6285.
Norfolk Southern	154	8314–8467	All units originally Conrail or LMSX. All Units retired in 2020
Union Pacific Railroad	204	9356–9559	9481–9559 are model C41-8W. Most stored or sold to GECX. 9521 & 9532 sold to Ferrocarril Central Andino in 2024
Pan Am Railways	6	7655, 7727, 7797, 7835, 7875, 7898	Classed as C40-8W. All units formerly CSX. Reacquired by CSX following 2022 CSX-Pan Am merger.
GE Capital Leasing (GECX)	108	9124-9450, 7700–7900, 7902–7922, 7300–7396, 7653–7695	All units are former CSX and Union Pacific. Units were temporarily leased to Canadian National and Norfolk Southern due to high rail traffic levels. Some units have since been sold to different owners, including Alabama & Gulf Coast, Berkshire & Eastern, Washington Eastern, Indiana and Ohio, Chicago, Fort Wayne and Eastern, and New England Central
Ferrocarril Central Andino (FCCA)	4	1033-1034, 1035-1036	1033 & 1034 are ex-CSX C40-8Ws; 1035 & 1036 are ex UP C41-8Ws

See also

• List of GE locomotives

References

• Bytown Railway Society (2004). Canadian Trackside Guide.
• General Electric Company (1990). Operating Manual Dash 8-40CW Diesel Electric Locomotives.
• McDonnell, Greg (2008). Locomotives: The Modern Diesel and Electric Reference. Erin, Ontario: Boston Mills Press. ISBN 978-1550464931.
• Solomon, Brian (2003). GE Locomotives: 110 Years of General Electric Motive Power. St. Paul, MN, USA: MBI Publishing. ISBN 9780760313619.
• Solomon, Brian (2010). Modern Locomotives: High Horsepower Diesels 1966–2000. New York: Crestline. ISBN 978-0785826811.