Details about John Deere 4640 Tractor – Overview and Key Specifications
The John Deere 4640 is a large, high-horsepower row-crop tractor produced from 1978 to 1982 as a key model in the brand’s esteemed “40 Series” line. Renowned for its power, durability, and advanced features for its era, it was built for large-scale farming operations.
Core Engine and Performance:
At its heart is the powerful John Deere 466 cubic inch (7.6L) turbocharged diesel engine (a 6-cylinder, in-line “Iron Horse”). In the 4640, this engine produced 155 horsepower at the PTO, delivering tremendous torque for heavy draft work. It was paired with John Deere’s innovative 16-speed Quad-Range transmission or the optional 8-speed Powershift, offering a wide selection of gears for precise field work and efficient road transport.
Design and Features:
The 4640 featured the iconic Sound-Gard body, a fully enclosed, sound-insulated cab that set a new industry standard for operator comfort, climate control, and noise reduction. It utilized a closed-center hydraulic system with high capacity to run multiple remote implements. Its power steering, excellent visibility, and robust rear three-point hitch made it incredibly versatile.
Legacy and Status:
The 4640 is considered a classic workhorse and a landmark tractor in agricultural history. Its combination of the legendary 466 engine, operator-focused cab, and proven drivetrain made it a favorite. Today, it remains a highly sought-after and collectible model, prized by restorers and still found working on farms, valued for its simplicity, reliability, and iconic status as a peak model from the golden age of mechanically-controlled, high-horsepower tractors.
