The Massey Ferguson 6490 tractor engine horsepower is 168 hp | 125.3 kW, PTO horsepower is 140 hp | 104.4 kW, and the drawbar horsepower is 121.5 hp | 90.6 kW.
Massey Ferguson 6490 Horsepower Specs
| Engine horsepower | 168 hp | 125.3 kW |
|---|---|
| PTO horsepower claimed | 140 hp | 104.4 kW |
| PTO horsepower tested | 145.2 hp | 108.3 kW |
| Drawbar horsepower tested | 121.5 hp | 90.6 kW |
Massey Ferguson 6490 Useful Horsepower Calculations
| PTO-to-engine power transfer | 83.3% of engine hp reaches the PTO |
|---|---|
| Drawbar-to-engine power transfer | 72.3% of engine hp reaches the drawbar |
| Drawbar-to-PTO power ratio | 86.8% drawbar hp vs PTO hp |
| Engine size per PTO horsepower | 2.9 ci per PTO hp |
| PTO horsepower per liter | 21.2 PTO hp per L |
| Engine size per engine horsepower | 2.4 ci per engine hp |
| Engine horsepower per liter | 25.5 engine hp per L |
| Rated speed per PTO horsepower | 15.7 rpm per PTO hp |
Massey Ferguson 6490 Engine Specs
| Engine model | year |
|---|---|
| Engine type | turbocharged intercooled diesel |
| Displacement | 402.5 ci | 6.6 L |
| Bore and stroke | 4.252×4.724 inches | 108 x 120 mm |
| Compression | 18.5:1 |
| Rated RPM | 2200 |
Massey Ferguson 6490 Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
Massey Ferguson 6490 Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Drawbar horsepower comparison
Displacement comparison
Rated RPM comparison
Engine size per PTO HP
Benchmarks use practical low, average and high ranges for the large ag tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Massey Ferguson 6490 Horsepower FAQ
How much horsepower does the Massey Ferguson 6490 have?
The listed engine output is 168 hp, below the 210 hp benchmark average. That is a lower-power result, so the smarter match is lighter implements and jobs that do not demand more than about 168 hp.
How much PTO horsepower does the Massey Ferguson 6490 have?
The listed PTO output is 140 hp, below the 175 hp benchmark average. For real use, size PTO implements below or near 140 hp rather than using a bigger engine-horsepower number.
How much drawbar horsepower does the Massey Ferguson 6490 have?
The listed drawbar output is 121.5 hp, below the 150 hp benchmark average. For pulling work, the safer assumption is about 121.5 hp at the drawbar before soil, ballast and tire limits are considered.
How much engine power reaches the PTO on the Massey Ferguson 6490?
The PTO-to-engine transfer works out to 83.3%, from 168 engine hp to 140 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Massey Ferguson 6490 for pulling work?
The drawbar-to-engine transfer is about 72.3%, from 168 engine hp to 121.5 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Massey Ferguson 6490 better judged by PTO hp or drawbar hp?
The drawbar output is about 86.8% of PTO output, comparing 121.5 drawbar hp with 140 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Massey Ferguson 6490 engine?
The engine displacement is 402.5 ci, below the 520 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the Massey Ferguson 6490 engine stressed for its PTO horsepower?
The engine has about 2.9 cubic inches per PTO hp, using 402.5 ci and 140 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Massey Ferguson 6490 make?
The output density is about 21.2 PTO hp per liter, using 140 PTO hp and 6.6 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official masseyferguson.com website before buying parts, sizing implements or making repair decisions.

