Horsepower limit for out of the box Edelbrock RPM heads

I am going to see how much i can get out of a set OOTB Edelbrock's i can get with a 340, will not be on the dyno, but i will have a time slip from 1/4 mile. And my 318 goes 91 in the 1/8th with OOTB Edelbrock's now.
Hey that's really good for a teener. Care to elaborate? Like weight, elevation and Scr/cam maybe?