Compare/International Harvester 766 vs International Harvester 856XL

International Harvester 766 vs International Harvester 856XL

Verdict: International Harvester 766 vs International Harvester 856XL

The International Harvester 766 and the International Harvester 856XL are both tractors — here is how they stack up on the figures that matter. International Harvester 766 leads on rated power with 80 hp against 79 hp. International Harvester 766 is the lighter machine (4,672 kg vs 8,465 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. International Harvester 856XL is the newer design (1983 vs 1971). In short: choose the International Harvester 766 for outright pulling power, or the International Harvester 856XL if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a 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

79 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

Four gears in two ranges, plus reverse range, with two-speed power shift.Reference

Total built

10,799Reference

—

Differential lock

—

mechanical rearReference

Engine

Fuel tank

140.0 LReference

—

Drawbar (tested)

54.7 kWReference

—

Displacement

5.9 LReference

3.9 LReference

Bore/Stroke

98 x 129 mmReference

Air cleaner

dual stage dryReference

—

Rated RPM

2400Reference

2300Reference

Starter volts

12Reference

Compression

17:1Reference

—

Power at rated engine speed

63.7 kWReference

—

Max power

54.7 kWReference

—

Engine

—

63.4 kWReference

Power

—

63.4 kWReference

Fuel system

—

direct injectionReference

Torque

—

310.5 NmReference

Torque RPM

—

1600Reference

Oil capacity

—

42.0 LReference

Coolant capacity

—

21.0 LReference

Transmission

Gears

16 forward and 8 reverseReference

16 forward and 4 reverseReference

Clutch

dry discReference

310mm dry discReference

Transmission

Torque AmplifierReference

IH SynchronReference

PTO & Hydraulics

PTO (tested)

63.7 kWReference

—

Type

two-speed power shiftReference

Pump flow

45.4 lpmReference

29.9 lpmReference

Rear Type

2Reference

IIReference

Rear PTO

independentReference

—

Rear PTO Type

540/1000Reference

Power at rated PTO speed

63.9 kWReference

—

PTO (claimed)

—

59.0 kWReference

Pressure

—

170.0 barReference

Control

—

position and draft controlReference

Rear lift

—

3949 kgReference

Dimensions

Wheelbase

266 cmReference

—

Weight

4672 kgReference

8465 to 9082 poundsReference

Front tire

9.5L-15Reference

7.50-18Reference

Rear tire

18.4-34Reference

—

Ag front

9.5L-15Reference

—

Ag rear

18.4-34Reference

—

Length

419 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

157 to 198 cmReference

2WD Wheelbase

—

238 cmReference

4WD Wheelbase

—

234 cmReference

2WD Rear tire

—

16.9R34Reference

2WD Standard tires (ag)

—

Front: 7.50-18. Rear: 16.9R34Reference

4WD Standard tires (ag)

—

Front: 13.6R24. Rear: 18.4R34Reference

2WD Length

—

368 cmReference

4WD Length

—

382 cmReference

2WD Weight

—

3839 kgReference

4WD Weight

—

4119 kgReference

2WD Clearance (front axle)

—

52 cmReference

4WD Clearance (front axle)

—

40 cmReference

Clearance (rear axle)

—

73 cmReference

2WD Front tread

—

134 to 182 cmReference

4WD Front tread

—

165 to 180 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

—

Capacities

Fuel

—

106.0 LReference

Front axle

—

9.0 LReference

Electrical

Ground

—

negativeReference

Charging system

—

alternatorReference

Charging amps

—

33Reference

Battery volts

—

12Reference

Battery AH

—

88Reference

International Harvester 856XL Height

2WD Cab

—

266 cmReference

4WD Cab

—

268 cmReference

Exhaust

—

282 cmReference

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.