I've noticed that most old factory manuals have the incorrect torque specs for Dana 60 bearing cap bolts and power lok case bolts. Bearing cap bolt torque from the service manual is 70-90 ft lbs but this is way too high for the grade 5 bolts that are used. Grade 5 clean dry torque is 75 ft lbs and 55 oiled with 30 wt. If you upgrade to grade 8 bolts dry is 110 and oiled is 80. Using factory torque specs on the grade 5 bolts results in overstretched bolts obviously . I guess that in the beginning the Dana 60 had grade 8 bolts but then they switched to grade 5 bolts and never changed the torques specs.Dana 60 Power lok bolt torque specs in the factory manual is way to low at 35-45, correct oiled torque is 65-70 for the usual grade 8 or 90-100 oiled if you have some bolts out of a Dana 70 with 7 lines or "180"(in attached pic) on the head (use 9/16" socket instead of 5/8 like grade 8)