[cobrashoch]

I assume you guys are taking about rough core casted blocks. It would be quite a new feat to CNC hidden water passages in a block from a billet. I too have seen complete machine(ing) of blocks done in about a day, without being in much of a hurry either. Many times, matter of fact. Were time figures into this thing is how well it's done, and to what specs that are required. All machine shops are not created equal you know.
cobrashock