Torque to yield, head bolts...

toolmanmike said
I'll bet those bolts were thread locked and that's why they came out so hard. TTY won't have that problem. Like Ford pick up driveshaft bolts. 12mm 12 point head Locktighted in with 50,000 miles on the clock. I warranted a lot of wrenches and 3/8 drive sockets before I discovered the 1/2" drive Nissan head bolt socket. A1/2" impact will take them loose!
Click to expand...
regarding the 3.5L cam bolt, it may have been loctited, but I think the length of the bolt had something to do with it. IIRC, it was about a foot long, because the female threads were in the MIDDLE of the camshaft, reached through a deep counterbore/rifle drill in the front of the shaft.