Flathead blocks

[Ken/Alabama]

O.K. here it goes. I have been around flatheads now for better than 20 yrs. Just to be clear on this ,is the crank or the cam offset in the block ? I always thought it was the crank that was offset but my machinest says that the cam is and not the crank. Im sure this has been covered here before . I do know the valves are different from one side of the block to the other.