560 gear ratio February 02, 2022 12:21AM
Does anyone know what the final ratio of a Farmall 560 in 5th gear is and also what it changes to if the ring and pinion is switched to one from a 400?

Re: 560 gear ratio February 02, 2022 02:28AM
5th gear is direct on a 560 so the only reduction is in the ring and pinion and the bull gears. 560 ring and pinion is 15/49 or 3.76:1 and the bull pinion to bull gear reduction is 13/73 or 5.61:1. This is 21.09:1 overall ratio so for every 21.09 engine revolutions the axle turns once. 400 ring and pinion is 19/50 or 2.63:1 and bull gear reduction is the same so overall reduction is 14.75:1

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