Compare/Hesston 766 vs Hesston 80-66

Hesston 766 vs Hesston 80-66

Verdict: Hesston 766 vs Hesston 80-66

The Hesston 766 and the Hesston 80-66 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 70 hp. Hesston 766 is the lighter machine (2,630 kg vs 5,800 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Hesston 80-66 is the newer design (1985 vs 1983). 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

Hesston

Fit score

Best match

Clear

Hesston

Fit score

Best match

Clear

Rated power

70 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Hesston (a part of Fiat)Reference

FiatReference

liquid-cooledReference

Four gears (1-4) in three ranges (I-III) with normal and creeper ranges.Reference

Original price

$22,650 (1984)Reference

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Drive

4x4 MFWD 4WD (766DT)Reference

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Distributor

—

HesstonReference

Variants

766DT

4WDReference

—

766HC

high-cropReference

—

80-66

—

utility 2WDReference

80-66DT

—

utility 4WDReference

80-66OR

—

orchard 2WDReference

80-66ORDT

—

orchard 4WDReference

80-66HC

—

high-cropReference

80-66HCDT

—

high-crop 4WDReference

Engine

Displacement

3.7 LReference

3.9 LReference

Bore/Stroke

103 x 110 mmReference

104 x 115 mmReference

Rated RPM

2500Reference

Starter

electricReference

Starter volts

12Reference

Fuel tank

—

72.7 LReference

Engine

—

59.7 kWReference

Drawbar (claimed)

—

46.2 kWReference

Drawbar (tested)

—

46.4 kWReference

Power

—

59.7 kWReference

Pre-heating

—

etherReference

Compression

—

17:1Reference

Power at rated engine speed

—

52.5 kWReference

Max power

—

46.4 kWReference

Transmission

Gears

12 forward and 4 reverseReference

20 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)

52.2 kWReference

Type

open centerReference

creeperReference

Valves

1Reference

1 to 3Reference

Rear Type

IIReference

Rear PTO

independentReference

Rear PTO Type

540Reference

540/1000Reference

PTO (tested)

—

52.5 kWReference

Pressure

—

186.2 barReference

Total flow

—

41.6 lpmReference

Control

—

position and lower-link draft controlReference

Rear lift

—

2355 kgReference

Power at rated PTO speed

—

51.4 kWReference

Dimensions

Weight

2630 kgReference

5800 to 6535 poundsReference

Front tire

7.50-18Reference

7.50-16Reference

Rear tire

18.4-30Reference

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Ag front

7.50-18Reference

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Ag rear

18.4-30Reference

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2WD Wheelbase

—

230 cmReference

4WD Wheelbase

—

224 cmReference

2WD Rear tire

—

18.4-30Reference

2WD Standard tires (ag)

—

Front: 7.50-16. Rear: 18.4-30Reference

4WD Standard tires (ag)

—

Front: 12.4-24. Rear: 18.4-30Reference

2WD Length

—

353 cmReference

4WD Length

—

363 cmReference

2WD Clearance (front axle)

—

54 cmReference

4WD Clearance (front axle)

—

40 cmReference

2WD Front tread

—

139 to 189 cmReference

4WD Front tread

—

153 to 195 cmReference

Rear tread

—

139 to 200 cmReference

2WD Shipping

—

2630 kgReference

4WD Shipping

—

2925 kgReference

4WD Operating

—

2964 kgReference

Ballasted

—

4263 kgReference

Steering wheel

—

170 cmReference

Electrical

Ground

negativeReference

—

Battery volts

12Reference

Charging system

—

alternatorReference

Charging amps

—

33Reference

Hesston 80-66 attachments

Hesston 80-66 Height

Hood

—

149 cmReference

ROPS

—

254 cmReference

Test results

Fuel use

—

15.9 l/hourReference

Max pull

—

3286 kgReference

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.