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 - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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