Compare/Best Thirty vs Oliver Super 66

Best Thirty vs Oliver Super 66

Verdict: Best Thirty vs Oliver Super 66

The Best Thirty and the Oliver Super 66 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 33 hp. Best Thirty is the lighter machine (3,356 kg vs 3,943 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Oliver Super 66 is the newer design (1954 vs 1921). 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

Best

Fit score

Best match

Clear

Oliver

Fit score

Best match

Clear

Rated power

33 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

BestReference

OliverReference

3-speed crawlerSeptember 15 - 22, 1924Link: Nebraska Tractor Test 104 fileReference

Diesel 6-speed 2WDMay 19 - 26, 1955Link: Nebraska Tractor Test 544 fileReference

Drive

crawlerReference

—

Steering

—

power optionalReference

Engine

Plows

4Reference

—

Drawbar (tested)

24.8 kWReference

20.9 kWReference

Belt (tested)

28.2 kWReference

25.1 kWReference

Displacement

7.6 LReference

2.4 LReference

Bore/Stroke

121 x 165 mmReference

89 x 95 mmReference

Rated RPM

850Reference

2000Reference

Belt power (max)

28.2 kWReference

25.1 kWReference

Max power

24.8 kWReference

20.5 kWReference

Drawbar (claimed)

—

16.6 kWReference

Air cleaner

—

oil bathReference

Compression

—

16:1Reference

Firing order

—

1-2-4-3Reference

Starter volts

—

12Reference

Transmission

Type

gearReference

unsynchronized gearReference

Gears

3 forward and 1 reverseReference

6 forward and 2 reverseReference

Clutch

—

dry discReference

Dimensions

Weight

3356 kgReference

3943 to 4050 poundsReference

Height

149 cmReference

—

Front tire

—

5.00-15Reference

Rear tire

—

10-38Reference

Ag front

—

5.00-15Reference

Ag rear

—

10-38Reference

Gas Operating weight

—

1788 kgReference

Diesel Operating weight

—

1837 kgReference

Capacities

Diameter

30 cmReference

—

Width

135 cmReference

—

RPM

800Reference

—

Speed

765.96 meters/minReference

—

Test results

Max pull

3430 kgReference

1992 kgReference

Belt fuel use (max)

—

9.1 l/hourReference

PTO & Hydraulics

PTO (claimed)

—

24.5 kWReference

Rear Type

—

optionalReference

Rear PTO

—

independentReference

Rear PTO Type

—

540 (1.375)Reference

Super 66 Serial Numbers

1954

—

7085Reference

1955

—

14099Reference

1956

—

39371Reference

1957

—

45846Reference

1958

—

57858Reference

Location:

—

Serial number plate below the dashboard.Reference

Questions

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.