Compare/Oliver 660 vs Oliver OC-6

Oliver 660 vs Oliver OC-6

Verdict: Oliver 660 vs Oliver OC-6

The Oliver 660 and the Oliver OC-6 are both tractors — here is how they stack up on the figures that matter. Oliver OC-6 leads on rated power with 45 hp against 41 hp. Oliver 660 is the lighter machine (3,128 kg vs 5,565 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Oliver 660 is the newer design (1959 vs 1953). In short: choose the Oliver OC-6 for outright pulling power, or the Oliver 660 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

Oliver

Fit score

Best match

Clear

Oliver

Fit score

Best match

Clear

Rated power

41 hp

45 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

OliverReference

With 9-38 rear tires.Reference

Diesel 6-speed crawlerApril 17 - May 7, 1954Link: Nebraska Tractor Test 517 fileReference

Drive

—

crawlerReference

Engine

Plows

3Reference

Drawbar (tested)

20.9 kWReference

25.0 kWReference

Belt (tested)

25.1 kWReference

—

Displacement

2.5 LReference

3.5 LReference

Bore/Stroke

92 x 95 mmReference

89 x 95 mmReference

Compression

16:1Reference

15.75:1Reference

Rated RPM

2000Reference

1600Reference

Starter volts

12Reference

—

Oil capacity

3.8 LReference

4.7 LReference

Coolant capacity

13.2 LReference

16.1 LReference

Belt power (max)

25.1 kWReference

—

Max power

20.5 kWReference

25.0 kWReference

Fuel tank

—

62.5 LReference

Engine

—

33.6 kWReference

Power

—

32.1 kWReference

Air cleaner

—

Vortox oil bathReference

Firing order

—

1-5-3-6-2-4Reference

Transmission

Type

unsynchronized gearReference

gearReference

Gears

6 forward and 2 reverseReference

Clutch

235mm dry discReference

dry discReference

PTO & Hydraulics

PTO (claimed)

30.6 kWReference

—

Hydraulic system

36.0 LReference

—

Capacity

36.0 LReference

—

Pump flow

30.3 lpmReference

—

Rear PTO

independentReference

independent optionalReference

Rear PTO Type

540Reference

—

Engine RPM

533@1750Reference

—

Capacities

Fuel

49.2 LReference

—

Dimensions

Wheelbase

233 cmReference

137 cmReference

Weight

3128 to 3178 poundsReference

5565 to 5855 poundsReference

Front tire

5.00-16Reference

—

Rear tire

9-38Reference

—

Ag front

6.00-16Reference

—

Ag rear

12.4-38Reference

—

Length

341 cmReference

308 cmReference

Width

205 cmReference

208 cmReference

Height

221 cmReference

143 cmReference

Gas Shipping weight

1418 kgReference

—

Diesel Shipping weight

1441 kgReference

—

Ground clearance

61 cmReference

50 cmReference

Gauge

—

172 cmReference

Gas Operating

—

2587 kgReference

Diesel Operating

—

2655 kgReference

660 Serial Number Location

660 Serial Numbers

1959

73132Reference

2RC366 (diesel)Reference

1960

86166Reference

2RC458 (diesel)Reference

1961

111213Reference

—

1962

117873Reference

—

1963

127356Reference

—

1964

141160Reference

—

Test results

Belt fuel use (max)

9.1 l/hourReference

—

Max pull

1992 kgReference

3074 kgReference

Speeds

OC-6 Serial Numbers

1953

—

3502776 (diesel)Reference

1954

—

4500007 (diesel)Reference

1955

—

1RM468 (diesel)Reference

1956

—

1RM632 (diesel)Reference

1957

—

1RM876 (diesel)Reference

1958

—

2RC262 (diesel)Reference

Oliver OC-6 Tracks

Option

—

12-inch tracksReference

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.