rear axle ratio

4020man · Feb 5, 2021

dieseltech I show that the 4020 rear axle ratio is 4 to 1.66 in my 1965 4020 service manual

Dieseltech · Feb 5, 2021

One fellow told me the axle ring gear count is 57 teeth on both 4010 and 4020. What I'd like to know is if the pinion counts I have are correct. If the 4010 has 18 teeth, with 57 ring gear ratio would be 3.165-1. If the 4020 has 15 pinion teeth, with 57 ring gear ratio would be 3.799-1. Anyone have each axle apart to get an accurate count?

rear axle ratio

4020man

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Dieseltech

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