Horsepower is a function of speed and torque. Dynos measure torque (although most have a scale calibrated to read hp at a given speed, ie 540 or 1000 rpm). If the speed varies from that which the scale is calibrated it is not accurate and needs to be converted. That being said any engine will make the same hp at any given engine rpm with only very very slight differences for friction because of differences in gear train no mater what chassis it is installed in.
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Today's Featured Article - Memories of a Farmall C - by Monty Bradley. When I was a child, my grandparents lived on a farm owned by a Mr. Walters. The crops raised were cotton and soybeans, with about forty head of mixed breed cattle. Mr. Walters owned two tractors then. A Farmall 300 on gasoline and a Farmall C, that had once belonged to his father-in-law, and had been converted from gasoline to LP Gas. Many times, as a small boy, I would cross the fence behind the house my grandparents lived in and walk down the turn row to where granddaddy would be cultivati
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