The John Deere 3420 tractor has 77 hp engine horsepower and 77 hp PTO horsepower.
Engine horsepower77 hp
PTO horsepower77 hp
Drawbar horsepower66 hp
Rated RPM2,500 rpm
Torque221 lb-ft
Operating weight7,668 lb
John Deere 3420 Horsepower Details
Engine horsepower
77 hp
PTO horsepower
77 hp
Drawbar horsepower
66 hp
Rated engine RPM
2,500 rpm
Engine torque
221 lb-ft
Engine displacement
5 L
Engine cylinders
6 cylinders
Engine model
a 5.0L 6-cylinder
Operating weight
7,668 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
77 hp
Average
113.7 hp
Low
20 hp
High
310 hp
PTO horsepower comparison
This model
77 hp
Average
101.7 hp
Low
17 hp
High
280 hp
Drawbar horsepower comparison
This model
66 hp
Average
98.4 hp
Low
17 hp
High
250 hp
Operating weight comparison
This model
7,668 lb
Average
10,042.2 lb
Low
317.2 lb
High
27,180 lb
John Deere 3420 Extra Horsepower Notes
Horsepower note
Engine and PTO output are nearly matched on the John Deere 3420, so the listed PTO figure stays close to the engine rating.
PTO note
The John Deere 3420’s 77 hp PTO rating should be read with its 2,500 rpm rated engine speed when comparing implement requirements.
Drawbar note
At 66 hp drawbar power, the John Deere 3420 is about 11 hp below its engine rating once power is measured as pull at the ground.
Power-to-weight note
The John Deere 3420 pairs 77 hp with 7,668 lb of operating weight, so the real-world result depends heavily on traction, ballast and tyre setup.
Engine note
The John Deere 3420’s engine setup is engine model a 5.0L 6-cylinder, 5 L displacement, 6 cylinders, rated at 2,500 rpm, matching its utility tractor horsepower range.
Torque / RPM note
The John Deere 3420 combines 221 lb-ft of torque with a 2,500 rpm rated engine speed, which fits a typical tractor rated-speed range.
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.
