Does anyone has exact, printed data of combustion chamber volumes of 4.0/4.2 V8 heads. It has been said that 4.2 has 41cc and 4.0 has 47cc or 4.0 has 41cc and 4.2cc has 47cc???. Since I have not heads here the make measurings I would like to know the answer black in white. Engine manuals do not have such a info even they tell piston dome volumes etc. etc. If not public way, then PM me.

Thanks.