Ford 640

Last Updated: July 2024

Overview

The Ford 640 is a 2WD utility tractor from the Ford 600 Series, manufactured between 1954 and 1957 in Highland Park, Michigan. It features a Ford EAE Red Tiger engine, a 134 cubic inches (2.2 L) four-cylinder engine running on gasoline. The tractor is designed with a manual steering system and an unsynchronized gearbox with 4 forward and 1 reverse gears. The chassis constitutes a 4x2 2WD configuration. The Ford 640 boasts a 31.01 hp engine, operating with a 2000 rated RPM and a 15-quart coolant capacity. The tractor maintains a category I rear hitch with a lift capacity of 1250 pounds and is equipped with an electric starter and a conventional type PTO operating at 540 RPM.
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Key Specifications

Category: Utility

Power Output: 31.01

Transmission: Unsynchronized gear

Drive Type: 2WD

Operating Weight: 3031

Fuel Type: Gasoline

Ford 640 vs. Similar Tractors

Power Output
Below Average
Greater than 29% of similar tractors.
Hitch Capacity
Below Average
Greater than 23% of similar tractors.
Operating Weight
Below Average
Greater than 25% of similar tractors.

Technical Specifications

Engine

Manufacturer
Ford
Model
EAE Red Tiger
Cooling Type
Liquid-cooled
Cylinder Orientation
Inline
Valve Configuration
-
Fuel Type
Gasoline
Induction Type
Naturally aspirated
Cylinders
4
Displacement (ci)
134
Bore (in)
3.44
Stroke (in)
3.6
Rated RPM
2000
Power Output (hp)
31.01

Transmission

Type
Unsynchronized gear
Forward Gears
4
Reverse Gears
1
Total Gears
-

Dimensions

Length (in)
121.3
Width (in)
64.6
Height (in)
58.7
Operating Weight (lb)
3031

Power Take-Off (PTO)

PTO Type
Conventional
PTO Speed 1 (rpm)
540
PTO Speed 2 (rpm)
-
PTO Speed 3 (rpm)
-

Miscellaneous

Chassis
4x2 2WD
Drive Type
2WD
Steering Type
Manual
Coolant Capacity (qts)
15
Front Tire Diameter (in)
-
Front Tire Width (in)
-
Rear Tire Diameter (in)
28
Rear Tire Width (in)
-
Front/Rear Rim Diameter (in)
-
Tire Type
Agricultural
Manufacture - End Year
1957
Hitch Type
-
Hitch Category
I
Hitch Position
Rear
Hitch Capacity (lb)
1250 (at ends)
Operator Station Type
Open operator station
Starter Type
Electric
Brake Type
Internal expanding shoes operated by two foot pedals
Hydraulic System Type
Open Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: September 19 to October 4, 1955

Maximum Power and Fuel Consumption

  • Maximum Power at Rated Load (Belt): 27.64 HP at 2001 rpm
  • Fuel Consumption at Rated Load: 2.575 Gal/hr with a fuel efficiency of 10.73 Hp.hr/gal and a fuel consumption rate of 0.571 lb/hp.hr
  • Maximum Observed Horsepower (Belt): 31.01 HP (Test B)

Drawbar Performance

  • Rated Load: 22.39 HP at 1873 rpm with a drawbar pull of 1998 lbs (8.05% slip) and a speed of 4.48 mph
  • Maximum Load: 28.59 HP with a drawbar pull of 2437 lbs (9.79% slip) and a speed of 4.40 mph (Test F)

Torque and Engine Performance

  • Maximum Torque at Dynamometer: 197.4 lb-ft at 1004 rpm
  • Torque at Rated Load: 185.0 lb-ft at 1620 rpm

Overall Efficiency

  • Fuel Efficiency at Standard PTO Speed: 9.87 Hp.hr/gal with a fuel consumption rate of 0.621 lb/hp.hr during a 10-hour test (Test H)
  • Fuel Consumption at Maximum Load (Drawbar): 2.268 Gal/hr at 1873 rpm with a speed of 4.48 mph



Nebraska Tractor Test Lab. (1955). Test 560: Ford Model 640. University of Nebraska-Lincoln: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1047

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