Join Date: Jan 2002
Location: Calgary, Canada
Hello 3DUDE, The pinion gear thrust washers are still availiable from GM ( at least they are in Canada ), the part no. is # 3957940 for the eaton posi unit, and #3880141 for the open case ( non posi ). Not trying to second guess your mechanic, but sometimes the washers slip out from under the pinion gears when the crosspin is removed, and they are still inside the case. I would not run it without the washers as the pinion gears will have to much backlash and they will also auger out the case. Hope this helps. Mike.