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International Harvester 766 vs International Harvester Hydro 85
Verdict: International Harvester 766 vs International Harvester Hydro 85
The International Harvester 766 and the International Harvester Hydro 85 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 80 hp. International Harvester 766 holds more fuel (140.0 L vs 112.0 L) for longer stints between fills. International Harvester Hydro 85 is the newer design (1981 vs 1971). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
International Harvester
62
Fit score
Best match
Clear
International Harvester
62
Fit score
Best match
Clear
Rated power
80 hp
80 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
International HarvesterReference
International HarvesterReference
Four gears (1-4) in two ranges (low/high) with the Torque Amplifer (TA) power shift. The TA allows a shift-on-the-move between direct drive and a lower speed.Reference
liquid-cooledReference
Total built
10,799Reference
—
Differential lock
—
mechanical rearReference
Engine
Fuel tank
140.0 LReference
112.0 LReference
Drawbar (tested)
54.7 kWReference
—
Displacement
5.9 LReference
4.0 LReference
Bore/Stroke
98 x 129 mmReference
100 x 129 mmReference
Air cleaner
dual stage dryReference
—
Rated RPM
2400Reference
2300Reference
Starter volts
12Reference
12Reference
Compression
17:1Reference
—
Power at rated engine speed
63.7 kWReference
—
Max power
54.7 kWReference
—
Engine (gross)
—
59.7 kWReference
Engine (net)
—
57.7 kWReference
Power (net)
—
57.7 kWReference
Power (gross)
—
59.7 kWReference
Fuel system
—
indirect injectionReference
Torque
—
263.1 NmReference
Torque RPM
—
1600Reference
Starter
—
electricReference
Transmission
Gears
16 forward and 8 reverseReference
infinite forward and reverseReference
Clutch
dry discReference
hydraulic wet discReference
Transmission
Torque AmplifierReference
—
PTO & Hydraulics
PTO (tested)
63.7 kWReference
—
Type
two-speed power shiftReference
hydrostaticReference
Pump flow
45.4 lpmReference
46.9 lpmReference
Rear Type
2Reference
IIReference
Rear PTO
independentReference
independentReference
Rear PTO Type
540/1000Reference
540/1000Reference
Power at rated PTO speed
63.9 kWReference
—
PTO (claimed)
—
50.9 kWReference
Control
—
position and draft controlReference
Rear lift
—
2381 kgReference
Dimensions
Wheelbase
266 cmReference
224 cmReference
Weight
4672 kgReference
—
Front tire
9.5L-15Reference
10.00-16Reference
Rear tire
18.4-34Reference
16.9-34Reference
Ag front
9.5L-15Reference
12.4-24 (MFWD)Reference
Ag rear
18.4-34Reference
16.9-34Reference
Length
419 cmReference
374 cmReference
Width
248 cmReference
—
Height (exhaust)
266 cmReference
—
Operating weight
4672 kgReference
—
Ballasted weight
5388 kgReference
—
Clearance (drawbar)
35 cmReference
—
Bar rear axle
82 mmReference
—
Front tread
152 to 213 cmReference
—
Rear tread
142 to 254 cmReference
—
766 Serial Number Location
766 Serial Numbers
1971
7101Reference
—
1972
7416Reference
—
1973
9611Reference
—
1974
12378Reference
—
1975
14630Reference
—
1976
16840Reference
—
Test results
Fuel use
23.1 l/hourReference
—
Max pull
4189 kgReference
—
Hydro 85 Serial Numbers
Location:
—
Serial number plate on right front of tractor frame, above the front axle.Reference
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.