Actually, I believe all the pressure-oiled 235's had the large journal camshaft. The 216 and spray-oiler 235 engines used the cam with the small diameter bearings. Since the small journal cams are so scarce, it's possible to machine the bearing journals of a late model cam down and install it in the earlier block. I'm building an engine based on an early 235 block right now that will have a later model rotating assembly and an Elgin Corvette/261 grind cam, so the title paperwork on the vehicle won't have to be altered. With a little creative whittling on a few vital parts, a lot of stuff that's not supposed to fit can be mated up to work together.
Jerry