A Lima advertisement from 1949.
Cincinnati Union Terminal railroad number 25, a Lima LS-750.

Cincinnati Union Terminal railroad number 25, a Lima LS-750 (A-3149).

By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=30722714

WWYF 300x250
NFLShop.com - NFL Jerseys and Gear
Enter the Classic Streamliners Bookstore.
Shop for Trains and Railroad Collectibles on eBay
Shop for Railroad and Train Collectibles on eBay
Enter the Classic Streamliners Bookstore.
NFLShop.com - NFL Jerseys and Gear

Classic Streamliners - TRAIN​CYCLOPEDIA

A Lima advertisement from 1949.

Lima LS-750 and LS-800 Diesel-Electric Switcher Locomotives
The Lima 750 and 800 hp switchers were diesel-electric switching locomotives built between November 1949 and June 1951, by Lima Locomotive Works of Lima, Ohio, U.S.A.. The LS-750 is a 750 horsepower (560 kW) switcher. It was later upgraded to 800 hp (600 kW) by changing fuel rack settings. Both models used the same turbocharged Hamilton T-69-SA four-stroke, six cylinder inline diesel engine, a Westinghouse generator and 4 Westinghouse traction motors.

All six LS750s were sold to a single railroad, with two being sold after the LS-800 had been introduced. The 23 LS-800s were sold to just two railroads.

Lima-Hamilton did not assign model numbers to their models but referred to them by specification numbers. Model designations such as LS-750 or LS-800 were a railfan invention. Lima-Hamilton assigned A-3149 as the specification number for the 750 hp model, and A-3171 as the specification number for the 800 hp model.

Original owners

LS-750

Cincinnati Union Terminal (Whitewater Valley Railroad)
Quantity: 6
Road Numbers: 20–25

LS-800

Chicago, Rock Island and Pacific Railroad
Quantity: 2
Road Numbers: 800–801

Chicago River and Indiana Railroad (subsidiary of New York Central Railroad)
Quantity: 21
Road Numbers: 9800–9820

Preservation
The last extant LS750, former Cincinnati Union Terminal 25, is operated by the Whitewater Valley Railroad.

Lima LS-750 and LS-800 Overview
Type and origin
Power type: Diesel-electric
Builder: Lima Locomotive Works
Model: A-3149 (LS-750)
Model: A-3171 (LS-800)
Build date: November 1949 – June 1951
Total produced LS-750: 6
Total produced LS-800: 23
Specifications
AAR wheel arrangement: B-B
UIC class: Bo′Bo′
Gauge: 4 ft 8 1⁄2 in (1,435 mm)
Prime mover: Hamilton T69SA
Engine type: 4-stroke diesel
Aspiration: Turbocharged
Displacement: 4,580 cu in (75.1 l)
Cylinders: Inline 6
Cylinder size: 9 in × 12 in (229 mm × 305 mm)
Transmission: DC generator, DC traction motors
Locomotive brake: Straight air
Train brakes: Air
Performance figures
Power output: 750 hp (559 kW)
Power output: 800 hp (597 kW)
Career
Locale: United States

See also:

Lima Diesel Locomotives

Diesel Locomotives

Lima