Magnum Head / sunk exhaust valve

Every magnum head I’ve ever seen that came off a motor that was in a vehicle that was actually used as a “truck” had exhaust seats like that.

That’s not a unique situation for Magnum heads either.

I had some Ford Windsor heads in here a year or so ago...... some of the exhaust seats were sunk nearly a 1/4”.

I’m not going to get into a big debate about it, but in 30 years of being in the cylinder head repair business...... it’s actually not at all uncommon to see heads like that.

The chamber in the lower pic looks like it’s probably cracked where the two valves are closest to each other.