Quote: I have been thinking again on the alignment question also. I don't see that the block surface would be off at all. As for the bell housing, maybe the stock aluminum might be contorted after 40 years and have either block facing or the transmission facing out of whack. I have the tools to check it but ain't gona do it. Indexing the center is good enough.
Why wouldn't the block surface be affected after X thousands of heat cycles the same way the cam tunnel , the main line and the head deck surfaces are ?
