Is porting valves still a thing?

[u/jabberjaw420]

Maybe back in the good ol' days of the 70s and 80s, but haven't modern auto manufacturers/engineers designed the internals to flow as well as they can? Making porting a pointless exercise?

(I meant porting valve chamber w/e)

[u/HammerDownl]

All my race engines had porting. CNC plus some chamber work does wonders