Subscribe to a magazine

Ring And Pinion

Back to article View Gallery
2 of 12
Ring-gear diameter is one measure of strength, so is ring-gear thickness, and the size of the teeth in the gear. Again, as a general rule, the thinner the ring, or the thinner the teeth, the weaker the gear. These three ring-and-pinion sets-(from L to R) Dana 44, Ford 8.8-inch, and Ford 9-inch-are all about the same diameter. But notice how much stouter the Ford gears are compared with the 44.