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Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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![]() Brass Noggin-
A Ford 9" ring gear can have as few as 31 teeth or as many as 47 teeth. They are different sizes (the teeth, not the ring). Kinda like comparing two bolts that are the same diameter, and the same length, except one is fine thread and one is coarse thread. The pinion gears are cut to fit that ring, which is why I said they are a matched set. Recomendation: You haven't said what types of driving you plan on doing, so I'll give you a rough, safe answer. 3.73's w/ a 5 speed, and 3.55's w/ a 4 speed. Take care, -Chris
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