Quote Originally Posted by viking
I agree 1000% with you, but since I don't own a dyno or flowbench yet (come on lottery) and can't afford to swap real world parts at will and head out to the track, I figure the sim method is my best bet to make a educated guess at which mods will add the best bang for the buck.

As for the 400's, maybe I've just had better luck with them than most (no over heating issues) , or maybe I have'nt pushed em hard enough to blow one yet, all I can say is on mild hop up's they allways beat the 350's built the same way.
I will agree with what you said on mild hop ups due to the 4.125 bore x the 3.75 stroke.