All that “shoulda, coulda, woulda” stuff is great, since there’s fixtures and such, and the blocks should all be basically the same.
Then you measure the deck heights on one where they vary .030” from one end to another...... and that theory goes out the window.
Then you deck the block to even/square it up....... and when you’ve got it to where the lowest corner cleans up, it’s still about .015”-.020” taller than spec.
Or the cam bore that’s .012” too big, and .004” out of round.
There’s are countless examples of things that shouldn’t be possible to have happened...... and still made it past QC.
Like the one stage 6 I had here where one whole chamber was sunk about .125”.
14cc’s bigger than the one next to it....... valve tip heights off .100” plus from the adjacent chamber.
I’ve seen enough screwed up factory stuff to the point where I’m rarely surprised anymore.
