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International Harvester 1066 vs International Harvester 1206

Verdict: International Harvester 1066 vs International Harvester 1206

The International Harvester 1066 and the International Harvester 1206 are both tractors — here is how they stack up on the figures that matter. International Harvester 1066 leads on rated power with 116 hp against 113 hp. International Harvester 1206 is the lighter machine (4,588 kg vs 12,148 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 1066 holds more fuel (159.0 L vs 132.5 L) for longer stints between fills. International Harvester 1066 is the newer design (1971 vs 1965). In short: choose the International Harvester 1066 for outright pulling power, or the International Harvester 1206 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
International Harvester 1066 Tractor
International Harvester
85
Fit score
Best match
Clear
International Harvester 1206 Tractor
International Harvester
85
Fit score
Best match
Clear
Rated power
116 hp
113 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
International HarvesterReference
International HarvesterReference
Four gears (1-4) in two ranges (Low/High) with the two-speed Torque Amplifier power shift (TA/direct).Reference
The Torque Amplifier (TA) provides a clutchless power shift between Direct Drive (DD) and the lower TA gearing.Reference
Total built
54,947Reference
1,289Reference
Variants
1066 Hi-Clear
high-cropReference
IH 1206
standard frontReference
Farmall 1206
row-cropReference
Wheatland
larger platform, heavy drawbarReference
Engine
Fuel tank
159.0 LReference
132.5 LReference
Drawbar (claimed)
80.5 kWReference
74.3 kWReference
Drawbar (tested)
79.0 kWReference
70.8 kWReference
Displacement
6.8 LReference
5.9 LReference
Bore/Stroke
109 x 121 mmReference
105 x 108 mmReference
Air cleaner
dual stage dryReference
two-stage dryReference
Rated RPM
2600 (after 1973)Reference
2400Reference
Starter volts
12Reference
12Reference
Oil capacity
17.0 LReference
Coolant capacity
23.7 LReference
Power at rated engine speed
93.7 kWReference
84.0 kWReference
Max power
79.0 kWReference
70.8 kWReference
Compression
17.0:1Reference
Transmission
Gears
infinite forward and reverse (two-range)Reference
16 forward and 8 reverseReference
Clutch
dry discReference
Transmission
Torque AmplifierReference
Torque AmplifierReference
PTO & Hydraulics
PTO (claimed)
94.0 kWReference
84.0 kWReference
PTO (tested)
93.7 kWReference
84.0 kWReference
Type
hydrostaticReference
partial power shiftReference
Pump flow
45.4 lpmReference
45.4 lpmReference
Total flow
79.5 lpmReference
Steering flow
34.1 lpmReference
Rear Type
III/IIReference
IIIReference
Rear lift (at 24"/610mm)
2540 kgReference
Rear PTO
independentReference
independentReference
Rear PTO Type
540/1000Reference
1000Reference
Power at rated PTO speed
88.9 kWReference
79.5 kWReference
Valves
0 to 2Reference
Dimensions
Wheelbase
266 cmReference
231 cmReference
Weight
12148 to 13345 poundsReference
4588 kgReference
Front tire
11L-15Reference
11.00-16Reference
Rear tire
18.4-38Reference
24.5-32Reference
Ag front
11L-15Reference
11.00-16Reference
Ag rear
18.4-38Reference
24.5-32Reference
Length
419 cmReference
388 cmReference
Width
248 cmReference
238 cmReference
Height (exhaust)
281 cmReference
Clearance (drawbar)
40 cmReference
Bar rear axle
82 mmReference
82 mmReference
Operating
6053 kgReference
Ballasted
6921 kgReference
Height (steering wheel)
218 cmReference
Operating weight
4588 kgReference
Ballasted weight
6159 kgReference
1066 Serial Number Location
1066 Serial Numbers
1971
7101Reference
1972
12677Reference
1973
24205Reference
1974
34949Reference
1975
46855Reference
1976
56672Reference
Test results
Fuel use
31.4 l/hourReference
26.5 l/hourReference
Max pull
5896 kgReference
4873 kgReference
Speeds
1206 Serial Number Location
1206 Serial Numbers
1965
7501Reference
1966
7772Reference
1967
8492Reference

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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