EMD SD40A

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The EMD SD40A is a six-axle diesel-electric locomotive built by General Motors Electro-Motive Division (EMD) between 1969 and 1970. It's a variation of the EMD SD40, built specifically for the Illinois Central Railroad (IC).

Here are some key features and specifications of the EMD SD40A:

• Builder: General Motors Electro-Motive Division (EMD)
• Model: SD40A
• Build dates: 1969-1970
• Total produced: 18
• Operator: Exclusively for the Illinois Central Railroad
• Engine: EMD 16-645E3, V16 diesel
• Power output: 3,000 horsepower (2,240 kW)
• Configuration: C-C wheel arrangement.
• Gauge: 4 ft 8+1⁄2 in (1,435 mm) standard gauge

Distinguishing Features

• Longer Frame: The SD40A uses the longer frame from the EMD SDP45.
• Increased Fuel Capacity: This longer frame allowed for a larger 5,000-gallon fuel tank, which was the primary reason for the SD40A's design. Illinois Central wanted locomotives with greater fuel capacity for long-range road-switcher.
• Other Features: Dynamic brakes and L-shaped cab windows.

The SD40A was mechanically similar to the standard SD40, sharing the same 3,000 hp engine. In the 1990s, the remaining SD40A units were rebuilt to SD40-2R standards. This involved removing the dynamic brakes and replacing L-shaped cab windows.