Locomotives 576 and 578 are classic EMD F7 diesel units built in 1949 for the Chicago & North Western Railway. Originally numbered 4073C and 4087C, each locomotive produced 1,500 horsepower.
In 2021, the Tennessee Valley Railroad Museum (TVRM) acquired both engines from the United Railroad Historical Society of New Jersey, bringing them to Chattanooga for preservation and future operation.
The EMD F7 is one of the most successful diesel locomotive models built by General Motors’ Electro-Motive Division. More than 2,300 units were produced, and their dependable performance made them popular for both freight and passenger service across North America.
The F7 is easily recognized by its distinctive “bulldog nose” design, which improved crew visibility and offered better aerodynamics.
The introduction of the F7 marked a major turning point as railroads moved from steam to diesel power. They were adopted widely for their lower maintenance needs, improved fuel efficiency, and strong reliability.
Many F7s served for decades before retirement. Today, locomotives like 576 and 578 are preserved at museums such as TVRM so visitors can experience this important era in railroad history.
Specifications:
Locomotive: Chicago Northwestern 576 & 578
Locomotive Type: Diesel-Electric
Operators: Chicago Northwestern Railroad, United Railroad Historical Society of New Jersey, Tennessee Valley Railroad Museum
Model: F7A
Builder: General Motors Electro-Motive Division
Date Built: 1949
Locomotive Weight: 247,300 lb
Prime Mover: EMD 16-567B
Fuel: Diesel
Horsepower: 1,500 hp
Status: Stored Out of Service