The Stovebolt Site Forums The Shop Area Engine Shop 10 bolt, 12 bolt, 14 bolt, whaaa???

Usually it means the number of bolts holding the ring gear onto the differential case in GM products, the more bolts the larger the ring gear diameter & strength should go alone w/that. Ring gear diameter is usually used to ID for parts actually. And yes, I hear alla time "that's a 10-bolt cause theres 10 bolts on the cover" when its actually a Dana rearend. Brian