In the picture the block is for a 360/390, but just out of personal experience its much easier and cheaper to build a 460 based ford big block. And not to dis anyone, but the most common 460 based stroker is a 557ci using a .080 overbore and and a 4.500in stroke crank. If you get real crazy some of the stock 460 blocks can even go to .130+ overbore. If you want to find out more or see if I'm dropping bull take a look at http://www.460ford.com/forum/index.php I know this mainly from working on pulling trucks and mud drag trucks in central NE