Relative to street strip...
It's easy to forget... But go back to what you know, the basics, then use your math and find the smallest "usable" port volume 'for your cubic inch vs rpm' that flows the target.
Anything under 180cc is gonna leave top end power on the table, even in a street build.imo
Anything above 195cc is not the head i would choose for a street/strip deal. That's just me, I like velocity and as much as I can get away with. Just enough is just right.
Honestly, I dont build cookie cut engines. Everything I build is one off. I use custom grinds for everything, even warmed up stock gets a tad diff this n that. There really is no set in stone port volume, only a range. You as the builder need to know the sweet spot.
