The New Holland 8670 tractor engine horsepower is 170 hp | 126.8 kW, PTO horsepower is 145 hp | 108.1 kW, and the drawbar horsepower is 132.1 hp | 98.5 kW.
Engine HP170 hp | 126.8 kW
PTO HP145 hp | 108.1 kW
Drawbar HP132.1 hp | 98.5 kW
PTO Transfer85.3%
Displacement456 ci | 7.5 L
New Holland 8670 Horsepower Specs
Engine horsepower
170 hp | 126.8 kW
PTO horsepower claimed
145 hp | 108.1 kW
PTO horsepower tested
167.6 hp | 125.0 kW
Drawbar horsepower tested
132.1 hp | 98.5 kW
New Holland 8670 Useful Horsepower Calculations
PTO-to-engine power transfer
85.3% of engine hp reaches the PTO
Drawbar-to-engine power transfer
77.7% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
91.1% drawbar hp vs PTO hp
Engine size per PTO horsepower
3.1 ci per PTO hp
PTO horsepower per liter
19.3 PTO hp per L
Engine size per engine horsepower
2.7 ci per engine hp
Engine horsepower per liter
22.7 engine hp per L
Fuel tank per PTO horsepower
0.8 gal per PTO hp
Rated speed per PTO horsepower
14.5 rpm per PTO hp
New Holland 8670 Engine Specs
Engine type
turbocharged diesel
Displacement
456 ci | 7.5 L
Bore and stroke
4.4×5.0 inches | 112 x 127 mm
Compression
17.5:1
Rated RPM
2100
New Holland 8670 Fuel, Cooling, Starting & Service Specs
Fuel capacity
110 gal | 416.4 L
Starter volts
12
Starter power
6 hp | 4.5 kW
Battery volts
12
Firing order
1-5-3-6-2-4
Intake valve clearance
0.014 inches (cold) | 0.356 mm
Exhaust valve clearance
0.017 inches (cold) | 0.432 mm
New Holland 8670 Horsepower Comparison Charts
Engine horsepower comparison
This model
170 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
145 hp
Average
175 hp
Low
100 hp
High
320 hp
Drawbar horsepower comparison
This model
132.1 hp
Average
150 hp
Low
85 hp
High
280 hp
Displacement comparison
This model
456 ci
Average
520 ci
Low
360 ci
High
750 ci
Rated RPM comparison
This model
2,100 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
3.1 ci/hp
Average
3.3 ci/hp
Low
2 ci/hp
High
5.2 ci/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.
New Holland 8670 Horsepower FAQ
How much horsepower does the New Holland 8670 have?
The listed engine output is 170 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 170 hp.
How much PTO horsepower does the New Holland 8670 have?
The listed PTO output is 145 hp, below the 175 hp benchmark average. For real use, size PTO implements below or near 145 hp rather than using a bigger engine-horsepower number.
How much drawbar horsepower does the New Holland 8670 have?
The listed drawbar output is 132.1 hp, close to the 150 hp benchmark average. It gives a realistic pulling-power figure of about 132.1 hp.
How much engine power reaches the PTO on the New Holland 8670?
The PTO-to-engine transfer works out to 85.3%, from 170 engine hp to 145 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the New Holland 8670 for pulling work?
The drawbar-to-engine transfer is about 77.7%, from 170 engine hp to 132.1 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the New Holland 8670 better judged by PTO hp or drawbar hp?
The drawbar output is about 91.1% of PTO output, comparing 132.1 drawbar hp with 145 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the New Holland 8670 engine?
The engine displacement is 456 ci, below the 520 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the New Holland 8670 engine stressed for its PTO horsepower?
The engine has about 3.1 cubic inches per PTO hp, using 456 ci and 145 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the New Holland 8670 make?
The output density is about 19.3 PTO hp per liter, using 145 PTO hp and 7.5 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
Official information note
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.
