The Lycoming with the cam over the top is a bad design for medium low usage engines as the oil drains off the cam and it rusts, best is running the cam in the sump so it stay sealed from the air and better lubricated.
i.e A Volkswagon beetle engine layout.
There are so many design faults in a Lyc360 it is a surprise it runs or gets a plane off the ground before it breaks and I have the bills to prove it.
The roller cam version is best, as no scuffing occurs on the cam bit more expensive but better option.