Compare/Farmall 766 vs Farmall Hydro 70

Farmall 766 vs Farmall Hydro 70

Verdict: Farmall 766 vs Farmall Hydro 70

The Farmall 766 and the Farmall Hydro 70 are both tractors — here is how they stack up on the figures that matter. Farmall Hydro 70 leads on rated power with 90 hp against 80 hp. Farmall 766 is the lighter machine (4,672 kg vs 7,450 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. In short: choose the Farmall Hydro 70 for outright pulling power, or the Farmall 766 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

Farmall

Fit score

Clear

Farmall

Fit score

Best match

Clear

Rated power

80 hp

90 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Farmall (a part of International Harvester)Reference

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

Diesel hydrostatic 2WDNovember 14 - December 3, 1973Link: Nebraska Tractor Test 1155 fileReference

Total built

10,799Reference

—

Original price

—

$14,200Reference

Engine

Fuel tank

140.0 LReference

—

Drawbar (tested)

54.7 kWReference

40.2 kWReference

Displacement

5.9 LReference

5.1 LReference

Bore/Stroke

98 x 129 mmReference

98 x 112 mmReference

Air cleaner

dual stage dryReference

Rated RPM

2400Reference

Starter volts

12Reference

Compression

17:1Reference

Power at rated engine speed

63.7 kWReference

51.8 kWReference

Max power

54.7 kWReference

39.6 kWReference

Engine (gross)

—

67.1 kWReference

Drawbar (claimed)

—

40.3 kWReference

Power (gross)

—

67.1 kWReference

Idle RPM

—

900-2400Reference

Oil capacity

—

75.7 LReference

Coolant capacity

—

19.9 LReference

Transmission

Gears

16 forward and 8 reverseReference

infinite forward and reverse (2-range)Reference

Clutch

dry discReference

—

Transmission

Torque AmplifierReference

—

PTO & Hydraulics

PTO (tested)

63.7 kWReference

51.9 kWReference

Type

two-speed power shiftReference

hydrostaticReference

Pump flow

45.4 lpmReference

22.7 lpmReference

Rear Type

2Reference

IIReference

Rear PTO

independentReference

Rear PTO Type

540/1000Reference

540 (1.375)Reference

Power at rated PTO speed

63.9 kWReference

48.8 kWReference

PTO (claimed)

—

51.5 kWReference

Hydraulic system

—

75.7 LReference

Capacity

—

75.7 LReference

Rear valves

—

2Reference

Engine RPM

—

540@1986Reference

Dimensions

Wheelbase

266 cmReference

261 cmReference

Weight

4672 kgReference

7450 to 8200 poundsReference

Front tire

9.5L-15Reference

7.50-16Reference

Rear tire

18.4-34Reference

15.5-38Reference

Ag front

9.5L-15Reference

7.50-16Reference

Ag rear

18.4-34Reference

15.5-38Reference

Length

419 cmReference

408 cmReference

Width

248 cmReference

220 cmReference

Height (exhaust)

266 cmReference

264 cmReference

Operating weight

4672 kgReference

—

Ballasted weight

5388 kgReference

—

Clearance (drawbar)

35 cmReference

Front tread

152 to 213 cmReference

147 to 208 cmReference

Rear tread

142 to 254 cmReference

142 to 274 cmReference

Height (steering wheel)

—

195 cmReference

Gas Shipping

—

3379 kgReference

Diesel Shipping

—

3578 kgReference

Operating

—

3719 kgReference

766 Serial Number Location

766 Serial Numbers

1971

7101Reference

—

1972

7416Reference

—

1973

9611Reference

7501Reference

1974

12378Reference

7570Reference

1975

14630Reference

8681Reference

1976

16840Reference

10094Reference

Test results

Fuel use

23.1 l/hourReference

20.1 l/hourReference

Max pull

4189 kgReference

3769 kgReference

Capacities

Gas Fuel

—

124.9 LReference

Diesel Fuel

—

117.3 LReference

Hydro 70 Serial Number Location

Hydro 70 Serial Numbers

Electrical

Charging system

—

alternatorReference

Charging amps

—

37Reference

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.