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Farmall 806 vs Farmall 966
Verdict: Farmall 806 vs Farmall 966
The Farmall 806 and the Farmall 966 are both tractors — here is how they stack up on the figures that matter. Farmall 806 leads on rated power with 110 hp against 96 hp. Farmall 806 is the lighter machine (7,720 kg vs 11,116 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Farmall 966 is the newer design (1971 vs 1963). In short: choose the Farmall 806 for outright pulling power, or the Farmall 966 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
Farmall
85
Fit score
Best match
Clear
Farmall
85
Fit score
Best match
Clear
Rated power
110 hp
96 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Farmall (a part of International Harvester)Reference
Farmall (a part of International Harvester)Reference
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
42,957Reference
21,017Reference
Final drives
bull gearReference
—
Variants
IH 806
standard-treadReference
—
Farmall 806
row-cropReference
—
Engine
Fuel tank
159.0 LReference
—
LP-gas Fuel tank
177.9 LReference
—
Engine (gross)
82.0 kWReference
—
Drawbar (claimed)
62.6 kWReference
62.6 kWReference
Drawbar (tested)
63.2 kWReference
63.5 kWReference
Displacement
4.9 LReference
6.8 LReference
Bore/Stroke
97 x 112 mmReference
109 x 121 mmReference
Air cleaner
two-stage dryReference
dual dry elementsReference
Compression
17:1Reference
—
Rated RPM
2400Reference
2600 (late)Reference
Idle RPM
900-2400Reference
—
Starter volts
12Reference
—
Power (gross)
82.0 kWReference
—
Power at rated engine speed
69.7 kWReference
75.2 kWReference
Max power
60.8 kWReference
63.5 kWReference
Engine
—
84.3 kWReference
Power
—
84.3 kWReference
Firing order
—
1-5-3-6-2-4Reference
Oil capacity
—
85.2 LReference
Coolant capacity
—
22.7 LReference
Transmission
Gears
16 forward and 8 reverseReference
infinite forward and reverseReference
Clutch
12-inch dry discReference
dry discReference
Transmission
Torque AmplifierReference
Torque AmplifierReference
PTO & Hydraulics
PTO (claimed)
70.5 kWReference
70.8 kWReference
PTO (tested)
70.8 kWReference
75.2 kWReference
Type
two-speed power shiftReference
hydrostaticReference
Pump flow
11.4 lpmReference
45.4 lpmReference
Steering flow
34.1 lpmReference
34.1 lpmReference
Rear Type
II/IReference
IIReference
Rear PTO
independentReference
independentReference
Rear PTO Type
1000 (1.375)Reference
540/1000Reference
Engine RPM
1000@2100Reference
—
Power at rated PTO speed
62.0 kWReference
75.7 kWReference
Hydraulic system
—
85.2 LReference
Capacity
—
85.2 LReference
Pressure
—
137.9 barReference
Valves
—
1 to 4Reference
Total flow
—
79.5 lpmReference
Steering press.
—
106.9 barReference
Rear lift (at 24"/610mm)
—
1995 kgReference
Rear lift
—
2268 kgReference
Dimensions
Wheelbase
257 cmReference
266 cmReference
Weight
7720 to 8500 poundsReference
11116 to 11700 poundsReference
Front tire
6.50-16Reference
9.5L-15Reference
Rear tire
15.5-38Reference
18.4-34Reference
Ag front
6.50-16Reference
9.5L-15Reference
Ag rear
15.5-38Reference
18.4-34Reference
Length
408 cmReference
419 cmReference
Width
279 cmReference
248 cmReference
Height (steering wheel)
205 cmReference
—
Rear axle
82 mmReference
—
Front tread
20/40 cmReference
—
Rear tread
142 to 238 cmReference
—
Gasoline Shipping
3501 kgReference
—
Diesel Shipping
3855 kgReference
—
Ballasted
5395 kgReference
6123 kgReference
Height (exhaust)
—
266 cmReference
Ground clearance
—
35 cmReference
Operating
—
5307 kgReference
Farmall 806 attachments
806 Serial Numbers
1963
501Reference
—
1964
4709Reference
—
1965
15946Reference
—
1966
24038Reference
—
1967
34943Reference
—
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
Questions
Test results
Fuel use
36.0 l/hourReference
26.1 l/hourReference
Max pull
4115 kgReference
4552 kgReference
Speeds
Capacities
Fuel
—
140.0 LReference
966 Serial Numbers
1971
—
7101Reference
1972
—
11815Reference
1973
—
17794Reference
1974
—
22526Reference
1975
—
28119Reference
1976
—
31772Reference
Location:
—
Clutch housing, left sideReference
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.