Corporate 20 vs. Dana 44
The 20 (right, with a Trac-Lok diff) has a larger-diameter ring gear than the Dana 44 (left, with an open diff). But the main-journal bearings are smaller and weaker in a 20, making them more prone to breakage. Having a larger ring gear adds strength to the ring-and-pinion set because power from the engine is distributed over a larger surface area, reducing strain on the teeth. View Related Article
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