Don't go by the bolts mounting the valve cover on any 216/235 head for identification. I have a '58 235 in my '51 Chevy and I'm running the old style 216 valve cover. You just have to use the long rocker arm studs from a 216 and the gasket covers the 4 small holes where the later valve cover mounts. There is even a kit available to mount the old style cover on a 250. Now if somebody will make a kit to put the 250 distributer back in the center of the block, everybody might be fooled.
