The New Holland 6610S tractor engine horsepower is 85 hp | 63.4 kW, and PTO horsepower is 76 hp | 56.7 kW.
New Holland 6610S Horsepower Specs
| Engine horsepower | 85 hp | 63.4 kW |
|---|---|
| PTO horsepower claimed | 76 hp | 56.7 kW |
New Holland 6610S Useful Horsepower Calculations
| PTO-to-engine power transfer | 89.4% of engine hp reaches the PTO |
|---|---|
| Engine size per PTO horsepower | 4 ci per PTO hp |
| PTO horsepower per liter | 15.2 PTO hp per L |
| Engine size per engine horsepower | 3.6 ci per engine hp |
| Engine horsepower per liter | 17 engine hp per L |
| Fuel tank per PTO horsepower | 0.3 gal per PTO hp |
| Rated speed per PTO horsepower | 28.9 rpm per PTO hp |
New Holland 6610S Engine Specs
| Displacement | 304 ci | 5.0 L |
|---|---|
| Bore and stroke | 4.4×5.0 inches | 112 x 127 mm |
| Compression | 17.5:1 |
| Rated RPM | 2200 |
New Holland 6610S Fuel, Cooling, Starting & Service Specs
| Fuel capacity | 21.5 gal | 81.4 L |
|---|---|
| Starter volts | 12 |
| Battery volts | 12 |
| Firing order | 1-3-4-2 |
| Intake valve clearance | 0.016 inches (cold) | 0.406 mm |
| Exhaust valve clearance | 0.019 inches (cold) | 0.483 mm |
New Holland 6610S Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Displacement comparison
Rated RPM comparison
Engine size per PTO HP
Benchmarks use practical low, average and high ranges for the utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
New Holland 6610S Horsepower FAQ
How much horsepower does the New Holland 6610S have?
The listed engine output is 85 hp, close to the 80 hp benchmark average. That puts the tractor in a normal working range for this benchmark group, with 85 hp as the main engine number.
How much PTO horsepower does the New Holland 6610S have?
The listed PTO output is 76 hp, above the 65 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 76 hp.
How much engine power reaches the PTO on the New Holland 6610S?
The PTO-to-engine transfer works out to 89.4%, from 85 engine hp to 76 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the New Holland 6610S engine?
The engine displacement is 304 ci, above the 260 ci benchmark average. Bigger displacement can help low-rpm pull and load-holding feel.
Is the New Holland 6610S engine stressed for its PTO horsepower?
The engine has about 4 cubic inches per PTO hp, using 304 ci and 76 PTO hp. That points to a larger-displacement, lower-stress style setup.
How much PTO horsepower per liter does the New Holland 6610S make?
The output density is about 15.2 PTO hp per liter, using 76 PTO hp and 5 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the New Holland 6610S rated at?
The rated speed is 2,200 rpm, close to the 2,200 rpm benchmark average. The 2,200 rpm figure is around normal for this class.
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 newholland.com website before buying parts, sizing implements or making repair decisions.
