It features a 9.0L PowerTech PSS engine delivering a rated 400 hp , capable of boosting up to 450 hp with Intelligent Power Management (IPM). It sets high standards for power efficiency, with independent tests showing it transmits roughly 91% of its power directly to the drawbar.
For a deep dive into the official performance data, you can view the Nebraska Tractor Test 2172, which provides the technical verification for its record-breaking drawbar performance. John Deere 8400R
The model is approved for Group 49 rear tires , which provide a larger footprint and better traction to handle its high horsepower without excessive soil compaction. It features a 9