Ford

6640

Farm tractor · 1991–1995 · 90 hp

Ford6640
EngineTransmissionHydraulicsHitchDimensionsWeightTires & TracksFuelSteeringCabCompatible ImplementsNebraska TestsMore Ford

The Ford 6640 is a farm tractor manufactured from 1991 to 1995. It features a Ford Genesis engine, and two-post foldable steering.

Engine

EngineFord Genesis
Fuel Typediesel
Cylinders4
Coolingliquid-cooled
Displacement304 ci (5 L)
Bore4.4 in (112 mm)
Stroke5 in (127 mm)
Compression Ratio17.5
Power Gross90.7 hp (67.6 kW)
Power Net85 hp (63.4 kW)
Power PTO77.13 hp (57.5 kW)
Power Drawbar67.18 hp (50.1 kW)
Torque Peak337 lb-ft (457 Nm)
Torque Peak1,200 RPM
Air Cleanerdual paper elements
Starter Volts12
Oil Capacity12.1 qts (11.5 L)
Coolant Capacity15.3 qts (14.5 L)
ManufacturerFord
Rated2,200 RPM
Idle725-2375 RPM
Firing Order1-3-4-2

Transmission

Available Options8-speed constant mesh, 16-speed two-speed power shift, 12-speed synchronized, 16-speed four-speed power shift

Hydraulics

Typeopen center (S/SL)
Pump Flow18.2 gpm (68.9 lpm)
Valves4

Hitch

Rear TypeII
Rear Lift4,200 lbs (1,905 kg)
Hitch Controlposition control and top-link draft sensing, electronic lower-link sensing optional on SLE

Dimensions

Length162 in (411 cm)
Width80 in (203 cm)
Height Cab107 in (271 cm)
Wheelbase93 in (236 cm)

Weight

Operating8,135 lbs (3,690 kg)
Ballasted10,368 lbs (4,702 kg)

Tires & Tracks

Front Ag7.50-16
Rear Ag16.9-30

Fuel

ROPS

Capacity52.7 gal (199.5 L)

Cab

Capacity46.9 gal (177.5 L)

Steering

Typetwo-post foldable
Pressure2,100 psi (144.8 bar)

Cab

Caboptional with air-conditioning (SL/SLE)

Compatible Implements

Rotary Cutters

ModelTypeWidthMin HP
Land Pride RCF2760Rotary Cutters60"35 hp
BEFCO BRC-172Rotary Cutters72"35 hp
Bush Hog BH310-2Rotary Cutters60"35 hp
BEFCO RMD-360Rotary Cutters60"35 hp
BEFCO BRC-272Rotary Cutters72"35 hp
Land Pride RCD1884Rotary Cutters84"35 hp
Land Pride RCF2772Rotary Cutters72"35 hp
BEFCO RMD-372Rotary Cutters72"40 hp
Land Pride RCF2696Rotary Cutters96"40 hp
Land Pride RCF2084Rotary Cutters84"45 hp
Bush Hog BH310 variant 2Rotary Cutters72"45 hp
Land Pride RCR1884Rotary Cutters84"45 hp
Land Pride RCR2596 - 3 PTRotary Cutters96"50 hp
Land Pride RCF3096 - 3PTRotary Cutters96"50 hp
Bush Hog BH210-3 variant 3Rotary Cutters84"50 hp
Land Pride RCF3696 - 3PTRotary Cutters96"50 hp
Land Pride RCFM3696 - 3PTRotary Cutters96"50 hp
BEFCO RHD-472Rotary Cutters72"50 hp
Bush Hog BH310 variant 3Rotary Cutters84"55 hp
Land Pride RCF3672Rotary Cutters72"60 hp
Land Pride RCF2784 - 3PTRotary Cutters84"60 hp
Land Pride RCR2510 - 3 PTRotary Cutters120"60 hp
Land Pride RCFM3010 - 3PTRotary Cutters120"60 hp
BEFCO RHD-484Rotary Cutters84"60 hp
Land Pride RCFM3610 - 3PTRotary Cutters120"60 hp
Land Pride RCF3610 - 3PTRotary Cutters120"60 hp
Land Pride RCF3010 - 3PTRotary Cutters120"60 hp
Bush Hog BH410 variant 1Rotary Cutters72"60 hp
Land Pride RCF3684 - 3PTRotary Cutters84"70 hp
Bush Hog BH410 variant 2Rotary Cutters84"70 hp
Land Pride RCPM2760Rotary Cutters60"75 hp
Land Pride RCP2760Rotary Cutters60"75 hp
Land Pride DB2660Rotary Cutters60"75 hp
Land Pride DBM2660Rotary Cutters60"75 hp

Box Blades

ModelTypeWidthMin HP
Land Pride BB3596Box Blades96"45 hp
Land Pride BB3584Box Blades84"45 hp
Land Pride BB3578Box Blades78"45 hp

Checked: 3-point hitch category, PTO horsepower. Not checked: PTO speed (540/1000), hydraulic flow, 3-point lift capacity, rear remotes, ballast.

These implements meet this tractor's hitch and PTO-HP requirements — this is not a full compatibility guarantee. Confirm the remaining specs with your dealer before purchasing.

Nebraska Tests

NTTLTest #1657
April 24-May 11, 1992

Nebraska Tractor Test

Drawbar
67.93HP
Hydraulics
21.3HP