Holley Street Avenger 770 for 408?

The holley cfm/cubic/rpm chart is just a guide line.

My 340 runs better/faster with a 750 than 650 with next to no sacrifice of low end.

I like the the holley 830 annular for 408-416 strokers, street/strip 440's, and built street 383/400's, I know thats broad but I'm talking about driving them on the street.
Once you get 11.1, w2's & solid roller on a sb stroker then it's more like 850-950cfm, same for 383. On the 400-440 it's when get past 11.1+comp, 300+cfm heads and over 7000 rpm=950-1050cfm

But 1 or 2 key things could offset that general guide line I just set.