• Rigid chassis
  • WhichTractor size: Utility
  • No lab test on file
  • 1991–1997

WhichTractor size, not the maker’s category

Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is

Ford 6640 (A) specs: hp, weight, years

FORD-POWERSTAR NA 304 CID-NA four-cylinder diesel. The manufacturer claimed 83.8 horsepower. No laboratory has tested one, so there is no measured figure at the shaft.

Engine power, claimed · gross or net not stated

83.8 hp

62.5 kW as stated by the source

No lab test on file

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Ford 6640”, claimed

This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.

Weight
8,510 lb
3-point lift
7,668 lb
Hyd. flow
9.9 gpm
Top speed
18.6–24.9 mph

Ford 6640 (A) specs: key facts

  • The Ford 6640 (A) was built from 1991 to 1997.

  • The Ford 6640 (A) has a claimed engine power (gross or net not stated) of 62.5 kW (83.8 hp); it has no measured PTO figure.

  • The Ford 6640 (A) was offered in two-wheel-drive and four-wheel-drive versions.

  • The Ford 6640 (A) has a FORD-POWERSTAR NA 304 CID-NA engine, a 4-cylinder 4.99 L diesel unit.

  • The Ford 6640 (A) weighs 3,860 kg (8,510 lb) unladen.

  • The Ford 6640 (A) has a rear PTO running at 540 rpm / 1000 rpm.

  • The three-point hitch of the Ford 6640 (A) lifts 3,478 kg (7,668 lb) at the lower-link ends.

  • The hydraulic pump of the Ford 6640 (A) delivers 37.4 L/min (9.9 gpm).

Source · Traktorenlexikon, “Ford 6640”

Illustration of the 1991–1997 Ford 6640 (A), a 84 hp farm tractor, four-wheel-drive version, a drawing generated from its specification record
Illustration — not a photograph · four-wheel-drive version

How much horsepower does a 6640 (A) have?

The only figure for the 6640 (A) is 83.8 hp (62.5 kW) of claimed engine power, gross or net not stated, no test standard stated — not power at the shaft.

Engine, claimed (gross/net not stated)
83.8 hp

Source · Traktorenlexikon, “Ford 6640”

What engine is in a 6640 (A)?

A 6640 (A) has a FORD-POWERSTAR NA 304 CID-NA, a 4-cylinder 4.99 L diesel engine.

Engine — 6640 (A) engine specifications
Make & modelFORD-POWERSTAR NA 304 CID-NA
Cylinders4, liquid-cooled
Displacement304.2 ci · 4.99 L
Max torque226 lb·ft · 307 N·m @ 1,240 rpm
Electrical system12 V

Source · Traktorenlexikon, “Ford 6640”

How much will a 6640 (A) lift, and what is its hydraulic flow?

A 6640 (A) lifts 7,668 lb (3,478 kg) at the lower-link ends of its Category 2 three-point hitch.

Hydraulics & PTO — 6640 (A) hydraulics and PTO specifications
SystemOpen centre
Pump flow9.9 gpm · 37.4 L/min
Pressure2,582 psi · 178 bar
Hitch categoryCategory 2
Lift at ends7,668 lb · 3,478 kg
Rear PTO540 rpm / 1000 rpm @ 1,890 engine rpm

Source · Traktorenlexikon, “Ford 6640”

What transmission does a 6640 (A) have?

Transmission specifications for the 6640 (A) are below.

Transmission — 6640 (A) transmission specifications
Top speed18.6–24.9 mph · 30–40 km/hthe article lists alternatives

Source · Traktorenlexikon, “Ford 6640”

How much does a 6640 (A) weigh?

A 6640 (A) weighs 8,510 lb (3,860 kg) unladen.

Weights & dimensions — 6640 (A) weights and dimensions
Unladen weight8,510 lb · 3,860 kgtwo-wheel-drive version
Wheelbase93.0 in · 2,362 mm
Length160.4 in · 4,073 mm
Width76.8 in · 1,950 mmtwo-wheel-drive version
Height107.9 in · 2,741 mm
Ground clearance16.0 in · 407 mmtwo-wheel-drive version
Rear track60.2–79.8 in · 1,528–2,028 mm

Source · Traktorenlexikon, “Ford 6640”

What oil does a 6640 (A) take, and how much?

A 6640 (A) engine takes 12.0 qt (11.4 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.

6640 (A) fluid capacities, grades and service intervals
SystemCapacity
Engine oil12.0 qt · 11.4 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified
Transmission64.0 qt · 60.6 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified
Hydraulic35.8 qt · 33.9 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified
Front axle6.6 qt · 6.2 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified
Final drives3.2 qt · 3.0 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified
Cooling system16.9 qt · 16.0 LSource: Traktorenlexikon, “Ford 6640” · single source, not independently verified

Always confirm against the operator’s manual for your machine before service.

Which tractors compare with a 6640 (A)?

Within 10% of its 83.8 hp of claimed engine power, the same type, and first built within 15 years of it.

Common questions about the Ford 6640 (A)

Is a 6640 (A) two-wheel drive or four-wheel drive?

The Ford 6640 (A) was offered in two-wheel-drive and four-wheel-drive versions.

What PTO does a 6640 (A) have?

A 6640 (A) has a 540 rpm / 1000 rpm rear PTO.

Sources and how this page was built

Compiled from Traktorenlexikon, “Ford 6640”.

Sources checked

14 SEP 2026

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. Traktorenlexikon: Ford 6640 — CC BY-SA 4.0, WIKIBOOKS-TL-91347 · revision 919903. Wikibooks contributors (Traktorenlexikon). Original document