The EMD SD40-2 is a 3,000-horsepower (2,200 kW) C-C diesel–electric locomotive built by EMD from 1972 to 1989. The SD40-2 was introduced in January 1972 as part of EMD's Dash 2 series, competing against the GE U30C.

The EMD SD40 is an American 6-axle diesel-electric locomotive built by General Motors Electro-Motive Division between January 1966 and August 1972. 1,268 locomotives were built between 1966 and 1972. In 1972, an improved version with new electronics was developed and marketed as a new locomotive, the SD40-2.

A “new” locomotive on display at the C&O Railway Heritage Center in Clifton Forge, Va., is officially designated C&O SD40 #7534. But this particular locomotive is much more than a number.

2025年3月17日 · CSX 4617 was the last of three unmodified SD40s on the roster. The other two were 4618 and 4621, both former Western Maryland units. We ran across the #4617 back in the early 1990's during our trip over to the Cumberland Hump to …

A CSX SD40-2 converted from an original SD40. There have been countless customized and specialized versions or variants of the model: the SD40-2F; a cowl-type unit built for the Canadian Pacific (CP), and the SD40-2W; built with a Canadian wide cab for Canadian National (CN), and many other variants as opposed to the original (as listed below).

2017年2月1日 · ATLANTA – CSX Transportation is the latest Class I railroad to take possession of six-axle ‘Eco’ locomotives for use in local and yard service. Progress Rail recently rebuilt 13 former CSX EMD SD40-2 locomotives into a new locomotive class known as SD40E3s at its Muncie, Ind., facility.

The EMD (Electro Motive Division) SD40 is a type of six-axle, 16-cylinder, 3,000hp diesel locomotive built from 1966 to 1972 (though first introduced in 1964). It is the predecessor or precursor to the SD40-2, and the initial successor to the SD35.

On the topic of performance, notable is that the improvements will yield rejuvenated 3,000-horsepower, six-axle locomotives for the fleet. The tractive power will increase from 86,000 to about 130,000 pounds, making it capable of doing the work of more modern, high-horsepower units in all types of freight service including intermodal and coal.

It became SBD 8050 in January 1983 and later CSX 8050, Class SD40-2, in April 1986. It was retired. 8056, Class SD40-2, was built in September 1979, #786208-17, FN 786208-17, as SCL 8056.

Two SD40-2's sandwich an unrebuilt SD40 at Marion, NC. These units offer a reminder of what coal train power looked like before the GE and AC invasion on the former Clinchfield. Three EMD's await an assignment in the small yard at Marion, NC. The NS connection track to the right feeds into the NS passing siding at Clinchcross.