What is the proper rotation force for the pinion bearing pre-load? I have herd 10-15 inch pounds and 25-30IP of ratating force. That is a big difference to me.
Thanks in advance,:thumbsup:
Brian

With new bearings it should be 19 to 22 inch pounds. With used bearings it can be anywhere from 5 to 15 inch pounds. If I use used bearings I measure the preload before disassembling the rear end and try to stay close to that when I put it back together. I DO NOT recommend reusing pinion bearings unless they are amlost new. To me it is asking for trouble.

Thanks Freddie, How about backlash for a 4 speed car? They are the factory GM gears. Randys ring and pinion says .005. What do you think?
Brian

I always go for .007 to .009. It depends on how the gears were made. If they were cut with the new 2 step process then they should be about .003 to .005, but Dana gears are the only ones that I know of that are cut this way.

Thanks Freddie