318 value
dan, you keep worrying about port velocity and valve size and all this bullshit that won't matter one bit in what you're trying to build.
zero. nada. zip. zilch.
you're not going to buy a 318 and splash the pot for 340/360 valve heads, or edelbrocks, or anything like that.
you're looking to build a stock motor. quit spiraling down the rabbit hole of magazine builds and theoretical engine subjects rather than focusing on practical application.
i get it. really i do. research is important. but maybe just get a car first.