The John Deere 8400 tractor has 400 hp engine horsepower and 252.2 hp PTO horsepower.
Engine horsepower400 hp
PTO horsepower252.2 hp
Drawbar horsepower202.3 hp
Rated RPM1,600 rpm
Torque660 lb-ft
Operating weight19,190 lb
John Deere 8400 Horsepower Details
Engine horsepower
400 hp
PTO horsepower
252.2 hp
Drawbar horsepower
202.3 hp
Rated engine RPM
1,600 rpm
Engine torque
660 lb-ft
Engine displacement
8.1 L
Engine cylinders
6 cylinders
Engine model
turbocharged aftercooled
Operating weight
19,190 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
400 hp
Average
117.3 hp
Low
8 hp
High
620 hp
PTO horsepower comparison
This model
252.2 hp
Average
103.8 hp
Low
8 hp
High
620 hp
Drawbar horsepower comparison
This model
202.3 hp
Average
100.5 hp
Low
7.5 hp
High
620 hp
Operating weight comparison
This model
19,190 lb
Average
9,758.8 lb
Low
340 lb
High
59,000 lb
John Deere 8400 Extra Horsepower Notes
Horsepower note
The John Deere 8400 shows 400 hp at the engine and 252.2 hp at the PTO, which is a large gap between engine power and PTO power for a high-horsepower tractor.
PTO note
The John Deere 8400’s PTO output is 252.2 hp, about 63.1% of its 400 hp engine rating, so PTO implement choice should be based on the PTO number.
Drawbar note
The John Deere 8400’s 202.3 hp drawbar rating is the better number for ground-pulling work than the 400 hp engine rating.
Power-to-weight note
The John Deere 8400 pairs 400 hp with 19,190 lb of operating weight, so the real-world result depends heavily on traction, ballast and tyre setup.
Engine note
The John Deere 8400’s engine setup is engine model turbocharged aftercooled, 8.1 L displacement, 6 cylinders, rated at 1,600 rpm, matching its high-horsepower horsepower range.
Torque / RPM note
The John Deere 8400’s 660 lb-ft torque figure should be read with its 8.1 L engine size and 1,600 rpm rated speed.
Official information note
Mistakes do happen. Horsepower, PTO horsepower, drawbar horsepower, weight and engine specs can change by year, market, engine option, cab, transmission and test standard. Please check the operator manual and official deere.com website for official information.
