If they came out of a Dodge Ram 2500, I'll bet they're 3. 54's. Count the number of teeth on the ring gear and divide by the number of teeth on the pinion gear and see what you get.Dukenrock said:I have a set (front/rear) of ring and pinion gears from a truck I bought new and replaced with 4. 11 gears. Any value? (60,000 miles)