Compare/Hesston 640 vs Hesston 70-66

Hesston 640 vs Hesston 70-66

Verdict: Hesston 640 vs Hesston 70-66

The Hesston 640 and the Hesston 70-66 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 63 hp. Hesston 640 is the lighter machine (2,145 kg vs 5,689 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Hesston 70-66 is the newer design (1985 vs 1981). 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

63 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

$17,700 (1984)Reference

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Drive

4x4 MFWD 4WD optionalReference

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Distributor

—

HesstonReference

Engine

Drawbar (claimed)

40.8 kWReference

40.3 kWReference

Displacement

3.5 LReference

3.6 LReference

Fuel tank

—

72.7 LReference

Engine

—

52.2 kWReference

Drawbar (tested)

—

40.4 kWReference

Bore/Stroke

—

100 x 115 mmReference

Power

—

52.2 kWReference

Compression

—

17:1Reference

Rated RPM

—

2500Reference

Starter

—

electricReference

Starter volts

—

12Reference

Power at rated engine speed

—

46.8 kWReference

Max power

—

40.4 kWReference

Transmission

Gears

8 forward and 2 reverseReference

20 forward and 8 reverseReference

PTO & Hydraulics

PTO (claimed)

47.0 kWReference

46.8 kWReference

Type

open centerReference

creeperReference

Valves

1Reference

1 to 3Reference

Rear Type

I/IIReference

Rear PTO

independentReference

Rear PTO Type

540Reference

540/groundReference

PTO (tested)

—

46.8 kWReference

Total flow

—

41.6 lpmReference

Control

—

position and lower-link draft controlReference

Rear lift

—

2355 kgReference

Power at rated PTO speed

—

46.8 kWReference

Dimensions

Weight

2145 kgReference

5689 to 6510 poundsReference

Front tire

7.50-16Reference

Rear tire

14.9-30Reference

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Ag front

7.50-16Reference

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Ag rear

14.9-30Reference

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2WD Wheelbase

—

230 cmReference

4WD Wheelbase

—

224 cmReference

2WD Rear tire

—

14.9-30Reference

2WD Standard tires (ag)

—

Front: 7.50-16. Rear: 14.9-30Reference

4WD Standard tires (ag)

—

Front: 9.5-24. Rear: 14.9-30Reference

2WD Length

—

353 cmReference

4WD Length

—

363 cmReference

2WD Clearance (front axle)

—

52 cmReference

4WD Clearance (front axle)

—

41 cmReference

2WD Front tread

—

139 to 189 cmReference

4WD Front tread

—

153 to 195 cmReference

Rear tread

—

139 to 200 cmReference

2WD Shipping

—

2580 kgReference

4WD Shipping

—

2880 kgReference

4WD Operating

—

2952 kgReference

Ballasted

—

3948 kgReference

Steering wheel

—

165 cmReference

Variants

70-66

—

utility 2WD[6073]Reference

70-66DT

—

utility 4WD[6073]Reference

70-66ORDT

—

orchard 4WDReference

70-66HC

—

high-cropReference

70-66HCDT

—

high-crop 4WDReference

Hesston 70-66 attachments

Electrical

Charging system

—

alternatorReference

Charging amps

—

33Reference

Battery volts

—

12Reference

Hesston 70-66 Height

Hood

—

149 cmReference

ROPS

—

247 cmReference

Test results

Fuel use

—

13.6 l/hourReference

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.