The Case IH MX305 Magnum tractor engine horsepower is 304 hp | 226.7 kW, PTO horsepower is 255 hp | 190.2 kW, and the drawbar horsepower is 220.34 hp | 164.3 kW.
Engine HP304 hp | 226.7 kW
PTO HP255 hp | 190.2 kW
Drawbar HP220.34 hp | 164.3 kW
PTO Transfer83.9%
Torque1938 lb-ft | 2627.9 Nm
Displacement540 ci | 8.9 L
Case IH MX305 Magnum Horsepower Specs
Engine horsepower
304 hp | 226.7 kW
PTO horsepower claimed
255 hp | 190.2 kW
PTO horsepower tested
299.70 hp | 223.5 kW
Drawbar horsepower tested
220.34 hp | 164.3 kW
Case IH MX305 Magnum Useful Horsepower Calculations
PTO-to-engine power transfer
83.9% of engine hp reaches the PTO
Drawbar-to-engine power transfer
72.5% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
86.4% drawbar hp vs PTO hp
Engine size per PTO horsepower
2.1 ci per PTO hp
PTO horsepower per liter
28.7 PTO hp per L
Engine size per engine horsepower
1.8 ci per engine hp
Engine horsepower per liter
34.2 engine hp per L
Torque per PTO horsepower
7.6 lb-ft per PTO hp
Fuel tank per PTO horsepower
0.7 gal per PTO hp
Case IH MX305 Magnum Engine Specs
Engine type
intercooled turbocharged diesel
Displacement
540 ci | 8.9 L
Bore and stroke
4.488×5.689 inches | 114 x 145 mm
Compression
17.6:1
Rated RPM
2000
Torque
1938 lb-ft | 2627.9 Nm
Torque RPM
1400
Case IH MX305 Magnum Fuel, Cooling, Starting & Service Specs
Fuel capacity
180 gal | 681.3 L
Starter volts
12
Battery volts
12
Case IH MX305 Magnum Horsepower Comparison Charts
Engine horsepower comparison
This model
304 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
255 hp
Average
175 hp
Low
100 hp
High
320 hp
Drawbar horsepower comparison
This model
220.3 hp
Average
150 hp
Low
85 hp
High
280 hp
Displacement comparison
This model
540 ci
Average
520 ci
Low
360 ci
High
750 ci
Torque comparison
This model
1,938 lb-ft
Average
700 lb-ft
Low
350 lb-ft
High
1,250 lb-ft
Rated RPM comparison
This model
2,000 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
2.1 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.
Case IH MX305 Magnum Horsepower FAQ
How much horsepower does the Case IH MX305 Magnum have?
The listed engine output is 304 hp, above the 210 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 304 hp.
How much PTO horsepower does the Case IH MX305 Magnum have?
The listed PTO output is 255 hp, above the 175 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 255 hp.
How much drawbar horsepower does the Case IH MX305 Magnum have?
The listed drawbar output is 220.3 hp, above the 150 hp benchmark average. That makes the 220.3 hp drawbar number more useful than engine hp for tillage and heavy pulling.
How much engine power reaches the PTO on the Case IH MX305 Magnum?
The PTO-to-engine transfer works out to 83.9%, from 304 engine hp to 255 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Case IH MX305 Magnum for pulling work?
The drawbar-to-engine transfer is about 72.5%, from 304 engine hp to 220.3 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Case IH MX305 Magnum better judged by PTO hp or drawbar hp?
The drawbar output is about 86.4% of PTO output, comparing 220.3 drawbar hp with 255 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Case IH MX305 Magnum engine?
The engine displacement is 540 ci, close to the 520 ci benchmark average. It is close to the normal engine-size range for this horsepower class.
Is the Case IH MX305 Magnum engine stressed for its PTO horsepower?
The engine has about 2.1 cubic inches per PTO hp, using 540 ci and 255 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH MX305 Magnum make?
The output density is about 28.6 PTO hp per liter, using 255 PTO hp and 8.9 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 caseih.com website before buying parts, sizing implements or making repair decisions.
