Is valve shrouding a concern in a 318 w/ 2.02 & 1.6 valves

Valve shrouding is a real concern. I watched my uncle who was a well known NHRA Stock/Super Stock engine builder back to back test a 1.88 vs. a 2.02 intake valve on the same port and same head with the trick valve job and back cuts on the flow bench on a 4 "bore. The 2.02 lost flow... because of the shrouding. It will be more on a 318...

It will work as long as there is not any interference but it will not be optimal.

On my factory iron head 360's I always ran 1.88's or 1.94's good enough for low 10's