I guess if you don't mind boring the snot out a block for a few extra cubes. Last 318 my father did was getting thin @ .060 over. Im sure some are thick enough, but I have yet to see one. Would be a good kit for an X block on the other hand. BTW... the last Indy 402 I see was a std 4" bore 360 block. looked at them in Carlisle last July. If I did a 318 it would be a 390, leaving plenty of cylinder wall and it would be less likely to overheat. For a 402 or bigger buy a 360 or 340 block, and not have to bore the snot out of it. JMO