machining cast iron cylinder block Mar 3, 2008 21:14:44 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by macmodels on Mar 3, 2008 21:14:44 GMT -5 Where do I start? Do I start with the bore, and work everything off the bore, or, do I start with a flat surface, like the side that mounts to the frame, and work off that surface?