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International Harvester 806 vs International Harvester 966
Verdict: International Harvester 806 vs International Harvester 966
The International Harvester 806 and the International Harvester 966 are both tractors — here is how they stack up on the figures that matter. International Harvester 966 leads on rated power with 96 hp against 95 hp. International Harvester 806 is the lighter machine (8,460 kg vs 11,116 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 966 is the newer design (1971 vs 1963). In short: choose the International Harvester 966 for outright pulling power, or the International Harvester 806 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
85
Fit score
Best match
Clear
International Harvester
85
Fit score
Best match
Clear
Rated power
95 hp
96 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
International HarvesterReference
International HarvesterReference
As two-range Torque Amplifer (TA) to the basic transmission. Pulling back on the left-hand TA lever provides a clutchless shift to a lower speed for each gear. Pushing the lever forward return to direct-drive mode.Reference
The hydrostatic transmission option ended in 1973 when the Hydro 100 began production.Reference
Total built
8,052Reference
21,017Reference
Original price
$6,800 (1967)Reference
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Drive
4x4 MFWD 4WD (optional)Reference
—
Steering
hydrostatic powerReference
—
Variants
IH 806
standard-treadReference
—
Farmall 806
row-cropReference
—
Hi-Clear
—
high-crop modelReference
Engine
Drawbar (claimed)
64.6 kWReference
62.6 kWReference
Displacement
4.9 LReference
6.8 LReference
Bore/Stroke
97 x 112 mmReference
109 x 121 mmReference
Air cleaner
dual dryReference
dual dry elementsReference
Rated RPM
2400Reference
2600 (late)Reference
Idle RPM
900-2400Reference
—
Starter volts
12Reference
—
Coolant capacity
22.7 LReference
22.7 LReference
Compression
8.71:1Reference
—
Engine
—
84.3 kWReference
Drawbar (tested)
—
63.5 kWReference
Power
—
84.3 kWReference
Firing order
—
1-5-3-6-2-4Reference
Oil capacity
—
85.2 LReference
Power at rated engine speed
—
75.2 kWReference
Max power
—
63.5 kWReference
Transmission
Gears
16 forward and 8 reverseReference
infinite forward and reverseReference
Transmission
Torque AmplifierReference
Torque AmplifierReference
Clutch
—
dry discReference
PTO & Hydraulics
PTO (claimed)
70.8 kWReference
70.8 kWReference
Hydraulic system
64.3 LReference
85.2 LReference
Type
partial power shiftReference
hydrostaticReference
Capacity
64.3 LReference
85.2 LReference
Pump flow
11.4 lpmReference
45.4 lpmReference
Total flow
90.8 lpmReference
79.5 lpmReference
Steering flow
34.1 lpmReference
34.1 lpmReference
Rear Type
IIReference
IIReference
Rear PTO
independentReference
independentReference
Rear PTO Type
540/1000Reference
540/1000Reference
PTO (tested)
—
75.2 kWReference
Pressure
—
137.9 barReference
Valves
—
1 to 4Reference
Steering press.
—
106.9 barReference
Rear lift (at 24"/610mm)
—
1995 kgReference
Rear lift
—
2268 kgReference
Power at rated PTO speed
—
75.7 kWReference
Capacities
Fuel
181.7 LReference
140.0 LReference
Dimensions
Wheelbase
231 cmReference
266 cmReference
Weight
8460 to 9220 poundsReference
11116 to 11700 poundsReference
Front tire
7.50-20Reference
9.5L-15Reference
Rear tire
18.4-34Reference
18.4-34Reference
Ag front
7.50-20Reference
9.5L-15Reference
Ag rear
23.1-34Reference
18.4-34Reference
Length
388 cmReference
419 cmReference
Width
269 cmReference
248 cmReference
Height (steering wheel)
208 cmReference
—
Shipping weight
4182 kgReference
—
Bar rear axle
82 mmReference
82 mmReference
Front tread
142/175/203 cmReference
—
Rear tread
152 to 213 cmReference
—
Height (exhaust)
—
266 cmReference
Ground clearance
—
35 cmReference
Operating
—
5307 kgReference
Ballasted
—
6123 kgReference
806 Serial Numbers
1963
501Reference
—
1964
1403Reference
—
1965
3758Reference
—
1966
5917Reference
—
1967
7409Reference
—
Electrical
Ground
negativeReference
—
Charging system
generatorReference
—
Charging amps
25Reference
32Reference
Batteries
1 (gas/LP)Reference
2Reference
Battery volts
12 (gas/LP)Reference
6Reference
Battery AH
60 (gas/LP)Reference
172Reference
Speeds
966 Serial Numbers
1971
—
7101Reference
1972
—
11815Reference
1973
—
17794Reference
1974
—
22526Reference
1975
—
28119Reference
1976
—
31772Reference
Location:
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Clutch housing, left sideReference
Test results
Fuel use
—
26.1 l/hourReference
Max pull
—
4552 kgReference
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.