Are you still using the pinion crush sleeve to set the pinion bearing preload or a spacer and shims? If crush sleeve, lose it and buy a spacer from Ratech Better yet,if you have access to a 742 case get it and use it
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
to set the pinion bearing preload or a spacer and shims? 
If crush sleeve, lose it and buy a spacer from Ratech 
Better yet,if you have access to a 742 case get it and use it 