The Case IH Farmall 120A tractor engine horsepower is 118 hp | 88.0 kW, PTO horsepower is 96 hp | 71.6 kW, and the drawbar horsepower is 86.68 hp | 64.6 kW.
Case IH Farmall 120A Horsepower Specs
| Engine gross horsepower | 118 hp | 88.0 kW |
|---|---|
| PTO horsepower claimed | 96 hp | 71.6 kW |
| PTO horsepower tested | 104.48 hp | 77.9 kW |
| Drawbar horsepower tested | 86.68 hp | 64.6 kW |
Case IH Farmall 120A Useful Horsepower Calculations
| PTO-to-engine power transfer | 81.4% of engine hp reaches the PTO |
|---|---|
| Drawbar-to-engine power transfer | 73.5% of engine hp reaches the drawbar |
| Drawbar-to-PTO power ratio | 90.3% drawbar hp vs PTO hp |
| Engine size per PTO horsepower | 2.9 ci per PTO hp |
| PTO horsepower per liter | 21.3 PTO hp per L |
| Engine size per engine horsepower | 2.3 ci per engine hp |
| Engine horsepower per liter | 26.2 engine hp per L |
| Fuel tank per PTO horsepower | 0.4 gal per PTO hp |
Case IH Farmall 120A Engine Specs
| Engine model | year |
|---|---|
| Engine type | turbocharged diesel |
| Displacement | 273.7 ci | 4.5 L |
| Bore and stroke | 4.094×5.197 inches | 104 x 132 mm |
Case IH Farmall 120A Fuel, Cooling, Starting & Service Specs
| Fuel capacity | 40 gal | 151.4 L |
|---|---|
| Starter volts | 12 |
| Battery volts | 12 |
Case IH Farmall 120A Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Drawbar horsepower comparison
Displacement 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.
Case IH Farmall 120A Horsepower FAQ
How much horsepower does the Case IH Farmall 120A have?
The listed engine output is 118 hp, above the 80 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 118 hp.
How much PTO horsepower does the Case IH Farmall 120A have?
The listed PTO output is 96 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 96 hp.
How much drawbar horsepower does the Case IH Farmall 120A have?
The listed drawbar output is 86.7 hp, above the 55 hp benchmark average. That makes the 86.7 hp drawbar number more useful than engine hp for tillage and heavy pulling.
How much engine power reaches the PTO on the Case IH Farmall 120A?
The PTO-to-engine transfer works out to 81.4%, from 118 engine hp to 96 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Case IH Farmall 120A for pulling work?
The drawbar-to-engine transfer is about 73.5%, from 118 engine hp to 86.7 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Case IH Farmall 120A better judged by PTO hp or drawbar hp?
The drawbar output is about 90.3% of PTO output, comparing 86.7 drawbar hp with 96 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Case IH Farmall 120A engine?
The engine displacement is 273.7 ci, close to the 260 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Case IH Farmall 120A engine stressed for its PTO horsepower?
The engine has about 2.9 cubic inches per PTO hp, using 273.7 ci and 96 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH Farmall 120A make?
The output density is about 21.3 PTO hp per liter, using 96 PTO hp and 4.5 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 caseih.com website before buying parts, sizing implements or making repair decisions.
