> If the bolt is a 12pt bolt then it is one of those "always replace" bolts. Drew - are you certain of this?? I put several high-torque, both-direction forces on that bolt when I rebuilt the block (ABA) because the #4 piston was frozen. Now I'm gonna panic that I need to fix it (< 100 miles on a rebuild, runs like a champ tho!) Plz confirm. Thx, JT