Torque Sequence
Start in the middle and work your way to the ends crossing over from the intake side to exhaust side each time. First time 25% of rated torque, then 75% then 100%. If you're using a clicker type torque wrench figure on a 5% override therefore if 100 ft/lbs is the target set wrench 105. Slow even pull on the torque wrench (no jerking) and remember to take your time. At least this is the way I do it. Almost forgot, use engine oil on the threads. I found a picture for BB's to give you an idea.
http://www.moparts.com/Tech/Archive/bb/19.html
Terry