The Caterpillar C13 is an inline-6 diesel

Diesel engine

A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 internal combustion engine

Internal combustion engine

The internal combustion engine is an engine in which the combustion of a fuel occurs with an oxidizer in a combustion chamber. In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine...

 made by Caterpillar. The engine is 12.5 liters in displacement (763 cubic inches). The cylinder

Cylinder (engine)

A cylinder is the central working part of a reciprocating engine or pump, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block, which is typically cast from aluminum or cast iron before receiving precision machine work...

 size is 5.12 x 6.18 bore/stroke.
The engine can produce 380-430 horsepower

Horsepower

Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

 at 2100 RPM. The peak torque

Torque

Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....

 occurs at an engine speed of 1200 RPM.

The engine weighs over one ton

Ton

The ton is a unit of measure. It has a long history and has acquired a number of meanings and uses over the years. It is used principally as a unit of weight, and as a unit of volume. It can also be used as a measure of energy, for truck classification, or as a colloquial term.It is derived from...

 at 2610 pounds. The Cat C13 is often used in Class 8

Class 8

Class 8 may refer to:* 8 Metre * British Rail Class 08* BR Standard Class 8* First Class 8* GCR Class 8* HAZMAT Class 8 Corrosive Substances* L&YR Class 8* NSB Class 8, a standard-gauge steam locomotive of Norway...

 vehicles (tractor-trailers). The Gleaner A85

Gleaner A85

The A85 is a Class 8 combine harvester made by Gleaner Manufacturing Company. The A85 is the largest Gleaner made, boasting a 459 horsepower Caterpillar C13 engine. It has a 350 bushel bin capacity, which it can unload in less than 90 seconds; unloading 4.5 bushels per second. The A85 has a 4-speed...

 is a Gleaner

Gleaner Manufacturing Company

Gleaner Manufacturing Company was the name of a company which made the first self-propelled combine harvesters. They are best known for their production while part of Allis-Chalmers Manufacturing Company. Gleaners were silver in color, unlike the Allis-Chalmers field tractors, which were unique...

 combine harvester

Combine harvester

The combine harvester, or simply combine, is a machine that harvests grain crops. The name derives from the fact that it combines three separate operations, reaping, threshing, and winnowing, into a single process. Among the crops harvested with a combine are wheat, oats, rye, barley, corn ,...

 that uses the C13, and it is considered a class 8 vehicle. In the A85 as well as in fire trucks, it is rated at a higher horsepower.