Compare/International Harvester 766 vs International Harvester 786

International Harvester 766 vs International Harvester 786

Verdict: International Harvester 766 vs International Harvester 786

The International Harvester 766 and the International Harvester 786 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 is the lighter machine (4,672 kg vs 10,600 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 786 is the newer design (1980 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.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

International Harvester

Fit score

Best match

Clear

International Harvester

Fit score

Best match

Clear

Rated power

80 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

18.4-34 rear tires.Reference

Total built

10,799Reference

1,844Reference

Final drives

—

bull gearReference

Steering

—

power assistReference

Engine

Fuel tank

140.0 LReference

—

Drawbar (tested)

54.7 kWReference

51.5 kWReference

Displacement

5.9 LReference

Bore/Stroke

98 x 129 mmReference

Air cleaner

dual stage dryReference

dual dry elementReference

Rated RPM

2400Reference

Starter volts

12Reference

—

Compression

17:1Reference

—

Power at rated engine speed

63.7 kWReference

59.8 kWReference

Max power

54.7 kWReference

51.5 kWReference

Coolant capacity

—

22.7 LReference

Oil capacity

—

85.2 LReference

Transmission

Gears

16 forward and 8 reverseReference

Clutch

dry discReference

—

Transmission

Torque AmplifierReference

Oil type

—

IH Hy-Tran/B-6Reference

PTO & Hydraulics

PTO (tested)

63.7 kWReference

59.8 kWReference

Type

two-speed power shiftReference

Pump flow

45.4 lpmReference

—

Rear Type

2Reference

II/IReference

Rear PTO

independentReference

Rear PTO Type

540/1000Reference

540/1000 (1.375)Reference

Power at rated PTO speed

63.9 kWReference

57.7 kWReference

Hydraulic system

—

85.2 LReference

Capacity

—

85.2 LReference

Dimensions

Wheelbase

266 cmReference

256 cmReference

Weight

4672 kgReference

10600 to 11590 poundsReference

Front tire

9.5L-15Reference

Rear tire

18.4-34Reference

Ag front

9.5L-15Reference

Ag rear

18.4-34Reference

Length

419 cmReference

Width

248 cmReference

259 cmReference

Height (exhaust)

266 cmReference

—

Operating weight

4672 kgReference

5257 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

—

Height (ROPS)

—

284 cmReference

Shipping weight

—

4808 kgReference

Ground clearance

—

33 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

18.5 l/hourReference

Max pull

4189 kgReference

4521 kgReference

Capacities

Fuel

—

83.3 LReference

786 Serial Numbers

1980

—

6601Reference

1981

—

8936Reference

Location:

—

Serial number plate on the right-frame of the tractor frame.Reference

Electrical

Ground

—

negativeReference

Charging system

—

alternatorReference

Charging amps

—

61 (with cab)Reference

Batteries

—

2Reference

Battery CCA

—

470Reference

Battery volts

—

12Reference

Speeds

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.