Cylinder Head 2

First shot is the start of clean up of the exhaust port. Notice how rough the casting with ridges et al.

The remaining shots are of the intake port. Notice the curve and the rough casting again. The intake port is round while the exhaust port is rectangular and if you note on the first photo again, the edge is irregular. Typically, these ports are cleaned up when mated to the respective manifolds. The intakes are very close, the exhausts are all over the place