Tighten each bolt w/a torque wrench to approx, 60in/lbs and then alternate back and forth between bolts adding 20 in/lbs to each side until you reach 150in/lbs. Back the bolts back down to 100 in/lbs then re-torque, again alternating 20 in/lbs side to side until you reach 150 in/lbs if you use moly lube or 170 in/lbs if you used oil.