I've seen A LOT of posts about making HP with a 318-So why is it so ???

I'm currently doing a bolt on job to a true 1968 318. The goal was a thousand bucks and see what she do. Thanks to careful purchases and a bit of diligent research, I added a Voodoo Hyd (702)cam .485/.495 112 LSA degreed in at 108 as per Harold's instructions, Elgin HP lifters, new Patriot headers, a new Jegs 2.5" exhaust, used Eddie's with a gasket porting job and bit of bowl blending(currently at machine shop getting gone through and new beehives installed), air gap manifold, stainless rockers, and I've got a Eddie 1406 to start with, and a 3310 if it needs more. I'm guessing just over 1hp per cube...between 320 and 380 at the crank. I'll have real numbers within the next few months....either chassis dyno or time slips. Just dont laugh too hard at the time slips...its in a B body..lol
My main thought is this...even if it ***** the bed, I'll sell the heads and headers for what I am into the whole engine for...then my 440 gets done that much quicker : )