Camshaft question

Hey a-body folks,
I have a question hopefully someone has experimented with.
Question is & I'll try to ask this as best that I can. With the camshaft having 4 events 1 being intake closing it has effects on dynamic compression & effective stroke.
Seems like most of the drag race Camshafts in the 260°-270°@.050 close around 68-80 degrees after the piston is on its way back up (valve still open)
Would there be a benefit of having a cam ground so the intake valve closes sooner?
My 471 should be around 11.8:1 static & is race only.