I don't know exactly what you are asking. But I'll put this out there -
Yes you can use these heads. I don't know what your compression will be without knowing precisely what your assembled specs are. But I can confirm that these heads are enormous, CC-wise. I can also say that they are no good for performance. Why?
They have a scallop cut between each set of intake ports and the middle exhaust ports share a common space rather than being divided all the way to the flange so headers won't tune.
But if you want to get running and they are all ready to go, why not? They worked for 30 plus years, right?
