[rsinor]

In general I typically see big block cylinder heads cast before the block is cast on complete assemblies. I believe the cylinder head machining and preparation process was more time consuming than the block. Again, most complete untouched assemblies I have seen the blocks are typically cast after the cylinder heads by I'm going to say a couple of weeks. Was that the norm, I don't know, its sure what I see most often. could heads be cast after the block, sure they could, but they would have to be before the final car assembly and I would think in fact no later than the engine block machine code.