The John Deere 8400R tractor has 400 hp engine horsepower and 367.8 hp PTO horsepower.
Engine horsepower400 hp
PTO horsepower367.8 hp
Drawbar horsepower330.4 hp
Rated RPM2,100 rpm
Operating weight19,190 lb
John Deere 8400R Horsepower Details
Engine horsepower
400 hp
PTO horsepower
367.8 hp
Drawbar horsepower
330.4 hp
Rated engine RPM
2,100 rpm
Engine displacement
9 L
Engine cylinders
6 cylinders
Operating weight
19,190 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
400 hp
Average
64.9 hp
Low
6 hp
High
540 hp
PTO horsepower comparison
This model
367.8 hp
Average
57.8 hp
Low
6 hp
High
620 hp
Drawbar horsepower comparison
This model
330.4 hp
Average
57 hp
Low
5.5 hp
High
470 hp
Operating weight comparison
This model
19,190 lb
Average
5,791.3 lb
Low
300 lb
High
59,000 lb
John Deere 8400R Extra Horsepower Notes
Horsepower note
The John Deere 8400R shows 400 hp at the engine and 367.8 hp at the PTO, which is a small drop from engine power to PTO power for a high-horsepower tractor.
PTO note
The John Deere 8400R’s PTO output is 367.8 hp, about 92% of its 400 hp engine rating, so PTO implement choice should be based on the PTO number.
Drawbar note
At 330.4 hp drawbar power, the John Deere 8400R is about 69.6 hp below its engine rating once power is measured as pull at the ground.
Power-to-weight note
At 19,190 lb and 400 hp, the John Deere 8400R works out to about 48 lb per engine horsepower, making it light for its power, so traction and ballast can become the limiting factor before engine power.
Engine note
The John Deere 8400R’s 9 L engine makes 400 hp, or about 44.4 hp per litre.
Torque / RPM note
The John Deere 8400R’s horsepower rating is tied to a rated engine speed of 2,100 rpm.
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.
