How do I use common GM 10-bolt rearend gears (S-10, F-body, etc) in my H-bodys 10-bolt housing?
The main problem is that, in the differential case, the hole for the pinion bearing is smaller in the H-body differential than in other GM 10-bolt differentials. You can either get a machine shop to enlarge this hole or use a special pinion bearing and race. So, the list is: • Enlarge pinion hole in differential and use S-10 bearing, race, and seal -OR- Use these non-factory parts: Timkin bearing #16143, Timkin bearing race #16283, and National seal #8610. Tony (tony63underwood) says that Timkin bearing 16143 crossreferences to BRG bearing part # BR42687 (this crossreference has been reported to be wrong–use at your own risk) and the race 16283 crosses to BR16283. • 7.5″ gear set with pinion • new carrier if the new gears won’t fit your current carrier (see 3.10) • S-10 rear end yoke • “Combination” U-joint (Dana #5-3022X) to mate the S-10 yoke with your stock driveshaft While you’re in there, you can upgrade to a new or different posi carrier by getting a 26-spline carrier of the rig
