Farmall 1066 Specs, Weight, Price, Overview, Horsepower, Review & Fuel Tank Capacity

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All the details which you want to know about Farmall 1066 you can find in this article which is updated.

Farmall 1066 Overview

The Farmall 1066 is a row-crop tractor that can have 2WD or 4WD. From 1971 to 1976, this tractor was made by the International Harvester Company in Rock Island, Illinois, USA.

The Farmall 1066 has a 6.8 L diesel engine and one of three transmissions: a gear-type transmission with a dry disc clutch (8 forward and 4 reverse gears),

a partial power shift transmission with a dry disc clutch (16 forward and 8 reverse gears), or a hydrostatic transmission with a dry disc clutch.

The row-crop tractor Farmall 1066 had a 6.8 L, 6784 cm2, (414 cuin), turbo diesel engine with a cylinder bore of 109.0 mm (4.29 in) and a piston stroke of 121.0 mm (4.76 in). The most power this engine could make was 109.5 PS (80.5 kW; 108 HP).

Farmall 1066 New Price

Farmall 1066


 Price: $21,100 (1976 )

Farmall 1066 Weight

 Operating Weight: 12148 to 13345 pounds

Farmall 1066 Horsepower

 Engine Horsepower: 108 hp 80.5 kW

Farmall 1066 Fuel Tank Capacity

 Fuel Tank Capacity: 42 gal 159.0 L

Farmall 1066 Serial Number

Year Serial Number
1971 7101
1972 12677
1973 24205
1974 34949
1975 46855
1976 56672

Farmall 1066 Specifications


Oil capacity: 17.0 L (17.96 US. qt, 14.96 Imp. qt.)
Coolant capacity: 23.7 L (25.04 US. qt, 20.85 Imp. qt.)
Engine model International Harvester DT414
Engine type Four-stroke, liquid-cooled, inline
Cylinders 6
Fuel type Diesel
Displacement 6.8 L, 6,784 cm2, (414 cu·in)
Bore and stroke 109.0 mm X 121.0 mm (4.29 in X 4.76 in)

General Specifications

Battery Two 6V 204A
Cabin type Open operator station
Model Farmall 1066
Length 4,190 mm (165 in)
Wheel base 2,660 mm (104.7 in)
Weight Gear: 5,510 kg (12,150 lbs)
Hydro: 5,590 kg (12,320 lbs)
Fuel tank capacity 159.0 liters (42 US gal.; 35 Imp. gal)


Rear tires Ag: 18.4-38
Front tires Ag: 11L-15

Transmission and chassis

Brakes Double dry disc, hydrostatic power self-adjusting
Transmission model
Transmission type Gear type with dry disc clutch
Chassis 4×2 2WD or 4×4 MFWD 4WD (optio
Steering type Hydrostatic power
Gears 8 forward and 4 reverse
Speed Forward: 32.6 kmh (20.3 mph) Reverse: 16.1 (10 mph)
Transmission model Torque Amplifier
Transmission type Hydrostatic
Gears Infinite (two-range) forward and reverse
Speed Forward: 27.4 kmh (17 mph) Reverse: 11.3 (7 mph)
Transmission type Partial power shift with dry disc clutch
Gears 16 forward and 8 reverse

Hydraulic system

Total flow 21.0 gpm (79.5 lpm)
Hydraulic type Open center
Pump flow 12.0 gpm (45.4 lpm)
Steering flow 9.0 gpm (34.1 lpm)

PTO (Power take-off shaft)

Rear PTO spped 540/1,000 rpm
Rear PTO type Independent

Farmall 1066 Review

The Farmall 1066, manufactured by International Harvester from 1966 to 1976, was a highly sought-after row-crop tractor. It featured a six-cylinder diesel engine that delivered 105 horsepower. The 1066 was celebrated for its durability, formidable power, and versatility.

Full review YouTube video check here.


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FAQs – Farmall 1066



Q.1 How much HP does a Farmall 1066 have?

Ans. 125 PTO horsepower.

Q.2 Was the international 1066 a good tractor?

Ans. The Farmall 1066 has hydrostatic power steering, a double dry disc, hydrostatic power self-adjusting brakes, an open operator station, and a fuel tank capacity of 159.0 litres (42 US gal. ; 35 Imp. gal.).

Q.3 What is the difference between a 966 and 1066?

Ans. Furthermore, a 966 has a 436 while a 10 has a 414, implying that the 9 has a larger engine. Nope, the NA 414 will be found in the 966, while the turbocharged 414 will be found in the 1066.

The cubic inches of a 966 and a 1066 are EXACTLY the same. The NA 436 is found on a 986.

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