560 farmall ring and pinion is a 3.26 to 1 ratio, SMTA, 400 and 450 is 2.63 to one. Unless you have a early 560 that the differential was never upgraded in put the 400 ring gear on the 560 differential. On the pinion shaft you need to use the 560 rear bearing and bearing housing on the 400 main shaft, unless its a early 560 tractor with a 3 bolt bearing housing instead of a later 4 bolt.
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Today's Featured Article - Talk of the Town: Repairin a Gas Tank - by Staff. This interesting discussion is from the Tool Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
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