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Oliver 550 vs Oliver 660
Verdict: Oliver 550 vs Oliver 660
The Oliver 550 and the Oliver 660 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 41 hp. Oliver 550 is the lighter machine (3,070 kg vs 3,128 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 1958). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.
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Fit & specs
Oliver
62
Fit score
Best match
Clear
Oliver
62
Fit score
Best match
Clear
Rated power
41 hp
41 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
OliverReference
OliverReference
Diesel 6-speed 2WDMay 13 - 26, 1959Link: Nebraska Tractor Test 698 fileReference
With 9-38 rear tires.Reference
Total built
3,915 (Cockshutt)Reference
—
Steering
power assistReference
—
Engine
Drawbar (claimed)
26.3 kWReference
—
Drawbar (tested)
26.4 kWReference
20.9 kWReference
Displacement
2.5 LReference
2.5 LReference
Bore/Stroke
92 x 95 mmReference
92 x 95 mmReference
Air cleaner
oil bathReference
—
Compression
16:1Reference
16:1Reference
Rated RPM
2000Reference
2000Reference
Starter volts
12Reference
12Reference
Oil capacity
18.9 LReference
3.8 LReference
Max power
26.2 kWReference
20.5 kWReference
Plows
—
3Reference
Belt (tested)
—
25.1 kWReference
Coolant capacity
—
13.2 LReference
Belt power (max)
—
25.1 kWReference
Transmission
Gears
6 forward and 2 reverseReference
6 forward and 2 reverseReference
Clutch
dry discReference
235mm dry discReference
PTO & Hydraulics
PTO (claimed)
30.9 kWReference
30.6 kWReference
PTO (tested)
30.9 kWReference
—
Hydraulic system
9.5 LReference
36.0 LReference
Type
gearReference
unsynchronized gearReference
Capacity
9.5 LReference
36.0 LReference
Pump flow
19.9 lpmReference
30.3 lpmReference
Rear Type
IReference
—
Rear PTO
independentReference
independentReference
Rear PTO Type
540/1000Reference
540Reference
Engine RPM
—
533@1750Reference
Capacities
Fuel
49.2 LReference
49.2 LReference
Dimensions
Wheelbase
185 cmReference
233 cmReference
Weight
3070 to 3730 poundsReference
3128 to 3178 poundsReference
Front tire
6.00-16Reference
5.00-16Reference
Rear tire
12-26Reference
9-38Reference
Ag front
6.00-16Reference
6.00-16Reference
Ag rear
12-26Reference
12.4-38Reference
Length
304 cmReference
341 cmReference
Height (steering wheel)
147 cmReference
—
Height (hood)
127 cmReference
—
Front tread
121 to 193 cmReference
—
Rear tread
121 to 193 cmReference
—
Gas Shipping
1392 kgReference
—
Diesel Shipping
1437 kgReference
—
Operating
1691 kgReference
—
Width
—
205 cmReference
Height
—
221 cmReference
Gas Shipping weight
—
1418 kgReference
Diesel Shipping weight
—
1441 kgReference
Ground clearance
—
61 cmReference
550 Serial Number Location
550 Serial Numbers
1958
60501Reference
—
1959
72632Reference
73132Reference
1960
84416Reference
86166Reference
1961
111868Reference
111213Reference
1962
117541Reference
117873Reference
1963
127365Reference
127356Reference
1964
140620Reference
141160Reference
1965
162265Reference
—
1966
171923Reference
—
1967
186165Reference
—
1968
206095Reference
—
1969
213340Reference
—
1970
222833Reference
—
1971
226965Reference
—
1972
232918Reference
—
1973
238237Reference
—
1974
248375Reference
—
1975
259255Reference
—
Final
259491Reference
—
Electrical
Ground
positiveReference
—
Batteries
1 (gas)Reference
—
Battery volts
12 (gas)Reference
—
Test results
Fuel use
10.6 l/hourReference
—
Max pull
2317 kgReference
1992 kgReference
Belt fuel use (max)
—
9.1 l/hourReference
660 Serial Number Location
660 Serial Numbers
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.