My last Stock block ran 9.74@2860 pounds. That block was rebuilt 3 times and in need of its 4th when it grabbed a bearing and broke a rod damaging the bottom of the block. .030 (360) from day one the bores were so bad I wore out 2 new sets of stones and most of the 3rd set just to get the bores to where I would assemble it. If I thought it was worth saving I would do some bring and have a new sleeve installed but it served me well and will be going on my scrap pile.