The same reason my 5.9 cummins turns 305 hp and my 8.1 Deere turns 285. It is in the design of the engine, yes sped has something to do with it, Fuel economy usually has to do how efficent the engine uses the fuel. I guy once told me that he and his friend each had a 20 ft boat, both identical in every way, except his had a chevy 454 and his friends had a 350, both had the same size tank but the guy with the 350 had to fuel up more often because he was using all his available hp. Lets say it takes 45 hp to pull a plow. Now if you have a 90 hp tractor it will use 50%of its hp to do the job. but a 50 hp tractor will use almost all of its hp to do the same job. Do you understand ? I hope some others will chime in and give a more scientific view. What is the RPMs of both tractors and bore and stroke?
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Today's Featured Article - Tractor Profile: Oliver 70 Row Crop - by Staff. The Oliver 70 was part of the "Fleetline Series" and was manufacturered from 1937 to 1948. The row-crop configuration could have either dual or single front wheels. The Oliver 70 was also offered in the standard, orchard and industrial configurations. The tractors were sold in Canada. An early advertisement states "Power when you want it - power when you need it - power to help put in crops when field conditions are right and time and help are limited. That's the power you'll find in an Oliv
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