Compare/International Harvester 766 vs International Harvester 786B

International Harvester 766 vs International Harvester 786B

Verdict: International Harvester 766 vs International Harvester 786B

The International Harvester 766 and the International Harvester 786B are both tractors — here is how they stack up on the figures that matter. International Harvester 786B leads on rated power with 81 hp against 80 hp. International Harvester 766 is the lighter machine (4,672 kg vs 5,150 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 786B is the newer design (1981 vs 1971). In short: choose the International Harvester 786B for outright pulling power, or the International Harvester 766 if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

80 hp

81 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

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

441Reference

Engine

Fuel tank

140.0 LReference

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Drawbar (tested)

54.7 kWReference

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Displacement

5.9 LReference

5.1 LReference

Bore/Stroke

98 x 129 mmReference

98 x 111 mmReference

Air cleaner

dual stage dryReference

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Rated RPM

2400Reference

Starter volts

12Reference

Compression

17:1Reference

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Power at rated engine speed

63.7 kWReference

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Max power

54.7 kWReference

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Engine

—

74.6 kWReference

Drawbar (claimed)

—

53.7 kWReference

Power

—

74.6 kWReference

Fuel system

—

direct injectionReference

Torque

—

300.1 NmReference

Torque RPM

—

1600Reference

Starter

—

electricReference

Transmission

Gears

16 forward and 8 reverseReference

Clutch

dry discReference

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Transmission

Torque AmplifierReference

International Harvester Torque AmplifierReference

PTO & Hydraulics

PTO (tested)

63.7 kWReference

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Type

two-speed power shiftReference

Pump flow

45.4 lpmReference

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Rear Type

2Reference

IIIReference

Rear PTO

independentReference

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Rear PTO Type

540/1000Reference

Power at rated PTO speed

63.9 kWReference

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PTO (claimed)

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60.4 kWReference

Hydraulic system

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85.2 LReference

Capacity

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85.2 LReference

Rear valves

—

2Reference

Rear lift (at ends)

—

2844 kgReference

Dimensions

Wheelbase

266 cmReference

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Weight

4672 kgReference

5150 kgReference

Front tire

9.5L-15Reference

10.00-16Reference

Rear tire

18.4-34Reference

23.1-30Reference

Ag front

9.5L-15Reference

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Ag rear

18.4-34Reference

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Length

419 cmReference

395 cmReference

Width

248 cmReference

258 cmReference

Height (exhaust)

266 cmReference

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Operating weight

4672 kgReference

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Ballasted weight

5388 kgReference

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Clearance (drawbar)

35 cmReference

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Bar rear axle

82 mmReference

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Front tread

152 to 213 cmReference

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Rear tread

142 to 254 cmReference

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Standard tires (ag)

—

Front: 10.00-16. Rear: 23.1-30Reference

Shipping weight

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5150 kgReference

Ground clearance

—

52 cmReference

766 Serial Number Location

766 Serial Numbers

1971

7101Reference

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1972

7416Reference

—

1973

9611Reference

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1974

12378Reference

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1975

14630Reference

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1976

16840Reference

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Test results

Fuel use

23.1 l/hourReference

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Max pull

4189 kgReference

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Electrical

Ground

—

negativeReference

Battery volts

—

12Reference

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.