10 Best Used American Tractors You Can Still Buy Today

8. International Harvester 1066

Introduced in 1971, the International Harvester 1066 was built for farmers needing serious power in a versatile machine. With around 105 to 108 PTO horsepower from its turbocharged diesel engine, it quickly became a favorite among medium and large-scale farms. Over 50,000 units were produced, showcasing its popularity.

Part of IH's 66 Series, the 1066 followed the older 56 Series and featured significant improvements in operator comfort and engine performance. Its torque amplifier transmission allowed operators to shift without using the clutch, making it ideal for varying soil conditions. This made the 1066 a key player in American farms during the 1970s, where efficiency was critical.

Even decades later, the 1066 remains a reliable choice for both farmers and collectors. With solid parts availability and a network of enthusiasts, it's still up to the task of tillage and hauling. For those seeking a classic red powerhouse, the 1066 continues to deliver.