International Harvester

660 (Gas) (1959-1963)

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Tractor Info


The big International 660 was Harvester’s largest wheel-type tractor during its 1959-63 production run. The 660 was a six-plow tractor, available in gasoline, propane, or diesel engine styles. When equipped for gasoline or pro­pane, an IH C-263 six-cylinder engine was featured, hav­ing a 3 19/16 x 4.39-inch bore and stroke. The 660 Diesel car­ried an IH D-282 engine with a 3 11/16 x 4.39-inch bore and stroke.

Tractor Info

Engine: IHC C-263 Vetical I-Head

Cylinders: 6

Bore & Stroke: 3.5625x4.390

RPM: 2400

CID: 263

Fuel: Gasoline

Main Fuel Tank Cap: 33

Aux Fuel Tank Cap:

Carburetor: IHC

Cooling Capacity: 4

Drawbar HP: 70.21

Belt PTO HP: 81.39

Weight: 7800 lbs

Length: 142.6 inches

Width: 78 inches

Height: 74 (steering wheel) inches

Number of Gears: 10/2


Total Produced: 6945

1959: 501

1960: 3398

1961: 4259

1962: 5883

1963: 6995-UP

Location: Plate left side of the clutch housing

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Last Updated: September 12th, 2022

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