May I ask a question here for the purpose of clarification?
What would be the difference between an L72 long block and an L88 if both are stamped CE? Since we are talking about a long block, I assume that it is an assembled unit, 512 casting, and unless you break it down, no way to indentify the rotating asembly numbers. If you put 840 heads on it, would it then become an L72? The CE stamped motor in my Camaro has 990 heads on it. Does that make it an L88?

I have never been involved in judging anything, so I'm just curious.