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3.90 Rear End

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Look on 720 2wds. Look on the pass side inner fender below the hood hinge for the engine tag. Here's one:




Look down in the lower right corner for HF 38


H solid axle housing

F ring gear size 190mm

38 means 3.889 or 3.90 ratio


37 would be 3.70, 41 would be 4.11 and so on. 4X4s never went that low and I thing used a larger drive shaft yoke after '82.

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