Edelbrock rpm head question

stroked 340 said
I had 11.9 to 1 compression in my 416 using mildly reworked Edelbrocks..no issues what so ever...

On pump gas...? Here we have v-power 99+ and we can't drive 11.9 on that, max realy MAX 11.0 cr whit 112 lsa and 300+ advs dur cam.
or are i miss understand the
?question?