Your big problem would be the change of gearing to make tractor faster in all gears so extra speed means less horsepower avaible to work and that extra size-weight of those tires will also take more power to turn them. So put all the factors together and a factory setup 46 model with the 4.5" all fuel engine would out pull your B with the 4 11/16" gas engine. Don't know if the loss of power would bother you or not. But if you are trying to do heay work it would definatly bother me. I had bothof those tractors I am compairin a 46 B and a 49 B. The 46 had a high speed tranny and the 49 a low speed and low in the 46 was equal to second in the 49 and if you put those tires on you will be equal in speed to the high speed tranny in the 46 B. So that is what you have to consider the speed and power change. Now if you are only going to be using PTO power it will not make you any difference but pulling a plow definatly a big noticable chane in pull ability. More traction but loss of horsepower.
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Today's Featured Article - Timing Your Magneto Ignition Tractor - by Chris Pratt. If you have done major engine work or restored your tractor, chances are you removed the magneto and spark plug wires and eventually reached the point where you had to put it all back together and make it run. On our first cosmetic restoration, not having a manual, we carefully marked the wires, taped the magneto in the position it came off, and were careful not to turn the engine over while we had these components off. We thought we could get by with this since the engine ran perfectly and would not need any internal work. After the cleanup and painting was done, we began reassembly and finally came to t
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