ProComp/Speedmaster aluminum heads

I still have not fully wrapped my head around the concept of quench but from what I understand the larger flat area created by the closed chamber head will improve quench effect. I have a set of SM heads I will be using on a 360 soon so I am following the 10% of this thread that is not completely fucked up talking about rubber heads and flying valves. I'm curious what the effect will be too.

Cley