Well I got my 3512 block cleaned up and it has some pretty good rust pits where the pistons sat. How much can a std 3512 BBC be bored? 60 or more? If it does not clean up should it be junked or can it be sleeved? or is that to expensive? If it can't be salvaged I'll prob sell the crank, it will clean up nice to 10, 10. Maybe I can sell it, its a stock 1970 GM forged 454 crank.