|Detail of a camshaft lobe
What is slightly odd is that the camshaft appears to have quietening ramps, nothing odd as such about that EXCEPT that they are on the trailing edge. I asked a Darracq owner which way the four cylinder camshaft rotates, that answer was clockwise. But the V8 camshaft rotates counter-clockwise. Based on that, I guess that it is a standard straight four being reused without regard for rotation.