i have built several LSvtecs, i always torque to 70, just about all of the headstud companies say 70, i havnt seen any that were different for these motors which is usually the GSR head studs. Some go to 80 But i have had great luck so far with 70. I dislike my ARP's, I made the switch to try them coming from aebs and golden eagle studs and i never had to retorque those, when i went to retorque my arp's, they turned. Bleh.