Southern Pacific 7323, an SD40R, in August 1982.

(Roger Puta, Courtesy Marty Bernard, railfan 44, Public domain, via Wikimedia Commons)



The EMD SD40R is a rebuild from EMD SD40 diesel locomotives that were originally built in 1966 and 1968, when they were first built, the first 79 were built between January and May 1966, and the last ten were April and June 1968.



Beginning in 1980, Southern Pacific had rebuilt all their surviving SD40's through a rebuild program at their own Sacramento Shops.

The following external changes from a standard SD40 had included:

  • Rear 5-light show cluster fitted.
  • Contactor access door on the front of the dynamic brake blister.
  • Electrical cabinet fitted behind left rear of cab.
  • Equipment box added to the end of the traction blower duct (on the left side).
  • Permanent MU cables fitted.
  • Electrical cab heater replaced 'hot water cab heater'.

Ten units (No. 7319, No. 7327, No. 7337, No. 7347, No. 7349, No. 7351, No. 7364, No. 7368 and No. 7374) had their engineer's windows shaped in an 'L' shape.

Although all were delivered with inside low-mount brake cylinders, no effort was made to move these to the outside upper position when rebuilt. Units could still be seen in 1996 with brake cylinders in the as delivered configuration.


SP's variants

SPSF "Kodachrome" livery
Southern Pacific painted units which were No. 7303, No. 7310, No. 7319, No. 7357, No. 7361 and No. 7384 into the Southern Pacific's "Kodachrome" livery of the proposed and failed merger between Southern Pacific and Santa Fe.


SP No. 7340 in the SP's "Daylight" livery.

(Roger Puta, Courtesy Marty Bernard, railfan 44, Public domain, via Wikimedia Commons)

SP's "Daylight" livery

In 1980, one unit No. 7340 was painted into the Southern Pacific's "Daylight" livery, predominantly sported the Daylight Orange colors, the front of the nose, and the rear of the long hood were Red, more likely to be SP Scarlet than Daylight Red. A Standard red wing with 'feathers' appeared on the right-hand side of the nose, but the left-hand side had a solid red wing.

The lettering and cab side number on the left-hand side was shown as red, but on the right-hand side, the lettering was shown as white, on both sides the lettering was stacked, the word "Pacific" under the word "Southern", rather than all in one line.

A white Gothic SP lettering was applied to the front of the hood. The truck side-frames, fuel tank, pilots, snowplow and side sill appear to be painted a very dark grey, as well as the top of the long hood, cab roof and the side of the long hood down to a point parallel with the bottom of the dynamic brake blister. The step wells were also painted in Daylight Orange, and the vertical part of the stepwell handrails were white to the first stanchion.


Olympic livery

As an Official Sponsor for the 1984 Los Angeles Olympic Games, the Southern Pacific had repainted SD40R No. 7347 into an Olympic paint scheme. No. 7347 was later repainted back into the SP's "Bloody Nose" paint scheme in July 1985, before being destroyed in a head-on collision August 1985.

No. 7347 was rebuilt from SD40 No. 8479, this was from the second order of SD40's delivered in 1968. The second order came with the L-shaped engineer’s window and handbrake on a stand mounted against the rear hood on the rear porch.



Type and origin
Power type: Diesel-electric
Builder: Electro-Motive Division (EMD)
Model: SD40 / SD40R
Build date: January 1966 – May 1966 (79), April 1968 – June 1968 (10)
Total produced: 89
Rebuild date: June 1980 – August 1981
Number rebuilt: 86
Configuration: AAR C-C
Gauge: 4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver diameter: 40 in (1,016 mm) diameter
Length: 65 ft 8 in (20.02 m); over the coupler pulling faces; 65 feet 9+1⁄2 inches (20.053 m) on some units starting early 1968.
Width: 10 ft 0 in (3.05 m)
Height: 15 ft 5+1⁄4 in (4.71 m)
Locomotive weight: 360,000 lb (160 t)
Fuel capacity: 3,200 US gal (12,000 L; 2,700 imp gal)
Lubricant capacity: 243 US gal (920 L; 202 imp gal)
Coolant capacity: 295 US gal (1,120 L; 246 imp gal)
Sandbox capapacity: 56 cu ft (1.6 m3)
Prime mover: EMD 16-645-E3
Engine type: V16 diesel
Aspiration: turbocharged
Alternator, main: AR-10
Alternator, auxiliary : D14
Traction motors: D-77
Cylinders: 16
Locomotive brake: Independent air; optional: dynamic brakes
Train brakes: Air, schedule 26-L
Performance figures
Maximum speed: 83 mph (134 km/h)
Power output: 3,000 hp (2,240 kW)