The John Deere 8RX 440 tractor has 434 hp engine horsepower and 355 hp PTO horsepower.
Engine horsepower434 hp
PTO horsepower355 hp
Drawbar horsepower386 hp
Rated RPM1,400 rpm
Torque2,695 Nm
Operating weight43,000 lb
John Deere 8RX 440 Horsepower Details
Engine horsepower
434 hp
PTO horsepower
355 hp
Drawbar horsepower
386 hp
Rated engine RPM
1,400 rpm
Engine torque
2,695 Nm
Engine displacement
13.6 L
Engine cylinders
6 cylinders
Engine model
a 13.6L 6-cylinder
Operating weight
43,000 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
434 hp
Average
99 hp
Low
5 hp
High
640 hp
PTO horsepower comparison
This model
355 hp
Average
86.2 hp
Low
5 hp
High
490 hp
Drawbar horsepower comparison
This model
386 hp
Average
87.8 hp
Low
5.5 hp
High
640 hp
Operating weight comparison
This model
43,000 lb
Average
9,181 lb
Low
320 lb
High
56,320 lb
John Deere 8RX 440 Extra Horsepower Notes
Horsepower note
The John Deere 8RX 440 shows 434 hp at the engine and 355 hp at the PTO, which is a normal drop from engine power to PTO power for a high-horsepower tractor.
PTO note
For PTO-driven work, the John Deere 8RX 440’s practical rating is 355 hp, which fits large PTO-driven equipment where the implement horsepower requirement matters more than the engine rating.
Drawbar note
At 386 hp drawbar power, the John Deere 8RX 440 is about 48 hp below its engine rating once power is measured as pull at the ground.
Power-to-weight note
At 43,000 lb and 434 hp, the John Deere 8RX 440 works out to about 99.1 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 8RX 440 uses engine model a 13.6L 6-cylinder, 13.6 L displacement, 6 cylinders, rated at 1,400 rpm, which helps explain where its horsepower rating comes from.
Torque / RPM note
The John Deere 8RX 440’s 2,695 Nm torque rating works with its 1,400 rpm rated speed, so load response depends on both numbers.
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.
