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To give you an idea of how stout Dana 80 components are, we placed a Dana 80 pinion shaft and ring gear (left) next to a pinion shaft and ring gear from a Dana 60. The Dana 80 pinion gear is 2 inches in diameter at its largest and 1.625 inches in diameter at its smallest and has 37 splines. The Dana 60 pinion gear is 1.625 inches in diameter at its largest and 1.250 inches in diameter at its smallest and has 29 splines (early Dana 60 pinion shafts had 10 coarse splines).

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