I'm not sure why some guys get so bothered about people stating the actual cubic inches of an engine, after all that's what the factory did. It's not like they "named" a 340 or a 440, they just simply stated the actual cubic inches. With that logic all stroker engines are what the block started out as, and although I know a lot of guys (mostly street racers) that subscribe to that it doesn't go over over well in class racing or when trying to pick the correct camshaft lol. To the op I have built quite a few small blocks .060 over (with no sonic test) with no issues but the only way to know for sure where a block is at is to sonic test it.