Ford 6640 Specs, Price and Review (2026)
Agricultural · 91 HP · Best for small farms and versatility
Power
91 HP (67.6 kW)
Fuel
Diesel
Transmission
Manual
PTO
77 HP @ 540 rpm
Weight
4,137 kg (4 t)
New price (est.)
$52,416 – $78,624
Est. used price
$18,346 – $55,037
Overview
The Ford 6640 is a 91 HP agricultural tractor built for mid-size farm fieldwork, loader use, and hay operations. The Ford tractor lineup is known for durability, and the 6640 is no exception. This page provides detailed Ford 6640 specifications — engine, transmission, PTO, hydraulics, weight, and dimensions — sourced from manufacturer technical data. Whether you need a 6640 review for a purchase decision or a trade-in comparison, this page covers performance analysis and suitability scoring. For Ford 6640 price guidance, we provide new price estimates and used market ranges so you can budget accurately before contacting a dealer. Compare the Ford 6640 with similar tractors using the links below, or use our TractorFit™ analysis to see how it scores for your specific operation.
TractorFitâ„¢ Analysis
Overall score
Based on specs and use-case fit for Ford 6640.
A mainstream farm segment for fieldwork, feeding, and material handling. Manual transmission keeps ownership costs down and is well understood for maintenance. Farm-oriented design prioritizes drawbar and PTO work, hydraulics, and durability. PTO specs determine compatibility with mowers, balers, and other powered attachments. Key specs include 91 HP, 77 HP PTO, 4 t operating weight, estimated used range $18,346–$55,037, and overall suitability 55/100.
Higher = simpler
Pros
- ✓Well suited to small and mid-size farms for power and maneuverability.
- ✓Simple maintenance; mechanical transmission with lower repair costs.
- ✓High versatility: PTO and hydraulic options for multiple implements.
- ✓Reliable manual transmission with low maintenance cost.
Cons
- •Limited capacity for intensive loader work.
- •Modest power-to-weight ratio; less agility in traction and on slopes.
- •Basic hydraulic system; limited for demanding implements.
Ford 6640 receives an overall suitability score of 55/100 from the TractorSuitability™ Engine. Ideal for small to mid-size farms (roughly 5–40 ha), light fieldwork, mowing, and properties where maneuverability matters, mixed use with multiple PTO and hydraulic implements. The suitability sub-scores allow an objective comparison of performance across farm sizes and use types. With 91 HP and around 4 tons weight, it fits small and mid-size farms where maneuverability and running costs matter. Loader work rates 31/100; fuel efficiency index is 68/100. Maintenance is classified as Low: Mechanical transmission and straightforward engine design; lower repair costs and easier DIY or general dealer servicing. Operating cost tier is Moderate: Reasonable fuel efficiency and maintenance; operating costs are in line with the power class. Versatility (71/100) reflects PTO and hydraulic options; cost tier (59/100) reflects value for money. It stands out in: small farm. It has relative limitations in: large farm, loader. Overall, it offers a balanced profile for its class. The TractorSuitability™ Engine uses manufacturer technical data only to compute these indices in an objective, reproducible way. We recommend comparing these scores with your specific acreage, crop type, and implement needs before deciding.
Real-world performance & ownership
Highlights
- HP band suits full-season fieldwork and feeding.
- Manual transmission keeps design simple and ownership costs lower.
- 4 t operating weight fits a broad range of implements and conditions.
- Rated PTO output of 77 HP supports mowers, hay tools, and other driven implements.
- Suitability profile is solid across typical use cases.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $18,346–$55,037 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Trade-offs
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Best for
- Row-crop and hay operations
- Feeding and material handling
- Full-season fieldwork
- Mixed tasks and attachment use
Not ideal for
- Heavy, continuous loader work
- Low-maintenance-first buyers
Ford 6640 — Pros and Cons
Pros
- HP band suits full-season fieldwork and feeding.
- Manual transmission keeps design simple and ownership costs lower.
- 4 t operating weight fits a broad range of implements and conditions.
- Rated PTO output of 77 HP supports mowers, hay tools, and other driven implements.
- Suitability profile is solid across typical use cases.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $18,346–$55,037 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Cons
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Used market insights
Estimated used price
$18,346 – $55,037 USD
High confidence
Estimate only. Actual prices vary by condition, hours, and region.
Buyer checklist
- Check engine and PTO hours; service history matters for long-term reliability.
- Confirm PTO speed (540/1000) and HP match your mowers, balers, or other implements.
- Inspect hydraulics and three-point hitch condition; repair costs can be high.
For used Ford 6640, hours and service history matter. Confirm PTO and hydraulic operation, tire condition, and that implements match your HP and category.
Find Used Listings (International)
Technical Specifications
What this means: Engine specs define power for PTO work, drawbar load, and fuel use. Higher displacement often means more torque at lower rpm.
Engine
- Maximum Power (Gross)
- 91 HP (67.6 kW)
- Fuel Type
- Diesel
- Cooling
- Liquid
Compare with similar models
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Frequently asked questions
Is the Ford 6640 good for loader work?
TractorFit scores rate this model as less suited for loader work (31/100). Check front axle capacity and loader compatibility for your intended use.
What is the Ford 6640 best used for?
As a farm tractor, the Ford 6640 is suited to fieldwork, PTO-driven implements, hay work, and general estate or small-farm tasks.
What type of transmission does the Ford 6640 have?
The Ford 6640 uses a manual transmission.
What should I check when buying a used Ford 6640?
Verify hours, condition, service history, PTO operation, hydraulics, and tire wear. Confirm weight and dimensions if you need to transport or match implements.
What fuel does the Ford 6640 use?
The Ford 6640 uses diesel fuel.
What is the weight of the Ford 6640?
Operating weight is approximately 4,137 kg (4 tons).
Where can I find used Ford 6640 listings?
This page links to international marketplaces where you can search for used Ford 6640 tractors; listings are provided by third parties.
How much does a used Ford 6640 cost?
Used Ford 6640 tractors are often listed in the range of $18,346–$55,037 USD (high confidence). Actual prices depend on hours, condition, and region.
Ford 6640: Complete Tractor Specifications and Technical Data
Overview
The Ford 6640 is a agricultural tractor from Ford designed for agricultural operations. This comprehensive tractor specifications guide provides complete technical data, engine specifications, transmission details, dimensions, and hydraulic system capabilities. This agricultural tractor features a 91 HP diesel engine with manual transmission, delivering reliable performance. Our tractor database provides detailed specifications and technical data for the Ford 6640, making it easy to compare with other models in the Ford lineup or across different brands.
Engine Specifications
The Ford 6640 is powered by a diesel engine that delivers 91 HP for agricultural tasks. Tractor horsepower is a critical specification that determines the machine's ability to handle various implements. The engine specifications demonstrate Ford's engineering expertise in creating efficient powerplants.
- Maximum Power: 91 HP (67.6 kW)
- Fuel Type: Diesel
- Cooling System: Liquid-cooled
Transmission Specifications
The Ford 6640 features a manual transmission system. Transmission type affects power delivery and operational efficiency. Different transmission types offer various advantages for different operating conditions and implement requirements.
Dimensions and Weight
Understanding tractor dimensions and weight is essential for storage, transport, and operational compatibility. The Ford 6640's specifications help determine if the tractor fits your operational requirements.
- Wheelbase: 2362 mm (93.0 in)
- Weight: 4137 kg (9121 lbs)
Power Take-Off (PTO)
The PTO system allows the tractor to transfer engine power to driven implements. PTO specifications, including horsepower and speed ratings, are essential when selecting implements.
- PTO Speed: 540 rpm
- PTO Power: 77 HP (57 kW)
Performance and Applications
The Ford 6640 delivers 91 HP performance for agricultural applications including plowing, planting, and harvesting. Tractor performance metrics, including power output, hydraulic capabilities, and dimensions, determine the machine's suitability for various tasks. When evaluating tractor performance, consider your specific application requirements, operating conditions, and implement needs to ensure the Ford 6640 matches your operational demands.
Technical Data Summary
This guide provides complete technical data and detailed specifications for the Ford 6640. Key specifications include: 91 HP engine, manual transmission, 77 HP PTO, and 4137 kg weight. These tractor specifications enable accurate comparisons with other models. Our tractor database provides comprehensive data for thousands of models, making it easy to research specifications and compare tractors.
Conclusion
The Ford 6640 is a reliable agricultural tractor from Ford, designed for modern farming operations. With its 91 HP diesel engine and manual transmission, weighing 4 tons, it provides dependable performance for agricultural tasks. This comprehensive guide offers all essential Ford 6640 tractor data and specifications for informed decision-making.
Conclusion
With 91 HP, the Ford 6640 is a solid choice for operators who need Row-crop and hay operations, Feeding and material handling, Full-season fieldwork. Check the price range shown above and compare with similar models to ensure it fits your budget. Use our comparison tool to stack the 6640 against other tractors in the same HP range before making a final decision.