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Super 77

Oliver Super 77

Last Updated: July 2024

Overview

The Oliver Super 77 is a two-wheel drive row-crop tractor manufactured by Oliver from 1954 to 1958. It features a liquid-cooled, six-cylinder engine available in gasoline/LP-gas or diesel versions, with a displacement of 3.5 liters (216 cubic inches). The tractor has a gear transmission with six forward and two reverse speeds. In Nebraska Tractor Test Lab results, it demonstrated a maximum belt horsepower of 43.98 HP at 1600 rpm and a maximum drawbar horsepower of 37.61 HP. The Super 77 has a variable weight configuration, ranging from 5049 lb in light configuration to 8564 lb in heavy configuration, showcasing its adaptability for various agricultural tasks.

Key Specifications

Category: Row Crop

Transmission: Gear

Drive Type: 2WD

Operating Weight: 5049 to 8564

Fuel Type: Gasoline/LP-gas and Diesel

Image Gallery

Oliver Super 77 Tractor

Oliver Super 77 vs. Similar Tractors

Operating Weight

Above Average

Greater than 88% of similar tractors.

Technical Specifications

Engine

Manufacturer: Waukesha-Oliver for gasoline/LP-gas, Oliver for diesel
Model: Waukesha-Oliver for gasoline/LP-gas, Oliver for diesel
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Gasoline/LP-gas and Diesel
Induction Type: Naturally aspirated
Cylinders: 6
Displacement (ci): 216
Bore (in): 3.5
Stroke (in): 3.74
Rated RPM: 1600
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 6
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): 139
Width (in): 80.3
Height (in): 61.5
Operating Weight (lb): 5049 to 8564

Power Take-Off (PTO)

PTO Type: Independent
PTO Speed 1 (rpm): 540
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2
Drive Type: 2WD
Steering Type: Manual or Power (optional)
Coolant Capacity (qts): 18
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Agricultural
Manufacture - End Year: 1958
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: Open
Starter Type: Electric (6 volts early models, 12 volts later models)
Brake Type: Double disc
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: May 18 to May 24, 1955

Maximum Power and Fuel Consumption

Maximum Belt Horsepower: 43.98 HP at 1600 rpm
Fuel Consumption at Maximum Load (Belt Test): 4.060 Gal/hr with a fuel efficiency of 10.83 Hp.hr/gal and a fuel rate of 0.559 lb/Hp.hr
Fuel Consumption at Operating Maximum Load (Belt Test): 3.553 Gal/hr with a fuel efficiency of 11.67 Hp.hr/gal and a fuel rate of 0.518 lb/Hp.hr

Drawbar Performance

Rated Drawbar Horsepower: 30.24 HP at 1200 lb pull with a speed of 5.65 mph (1600 rpm)
Drawbar Pull at Maximum Load: 2516 lbs at 5.61 mph (1602 rpm) with a power output of 37.61 HP in 4th gear
Drawbar Efficiency: 9.79 Hp.hr/gal with a fuel rate of 0.618 lb/Hp.hr at rated load

Torque and Engine Performance

Maximum Torque: 269.9 lb-ft at 899 rpm
Torque at Rated Speed (1600 rpm): 256.6 lb-ft

Tire and Weight Configuration

Rear Tires and Weight (Tested): Two 12-38, 6 ply with 20 lb air pressure, each weighing 586 lb (cast iron wheels with liquid ballast)
Total Tested Weight (with operator): 8564 lbs

Recommended Citation Format:
Nebraska Tractor Test Lab. (1955). Test 542: Oliver Super 77. Nebraska Tractor Tests. 526. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/526