Ported X head pics

X heads have a slightly different shaped intake Port floor starting just before/at the hump /short turn.
Depending on what you're doing you can remove the guide bump or not... it can be utilized to a degree or flow limit to help direct...I guess you could call it.. the air from the roof. Imagine what the air is doing coming across that roof and hitting that bump. people talk about swirl ports and then we look at all of the ports themselves and they all look the same at the roof ..and the guide.. and the pinch and the bowl...and the only difference is the X heads longer flatter port of the ssr peak...then those closed chamber swirl port heads...
Well now could it be they are all swirl port in the sense of dog-legged humped on the straight side with a valve guide tail crossing over the roof to some degree.. would you gather the roof/common wall air goes straight down that steeper taller side on the straight and across the floor ssr and around the bowl ,on the dog leg side. Look at those trick flow heads and how they direct that dog leg side guide at the straight far side of the bowl... Ehh... who cares..right ;)
air doesn't have to always go down the path that was designed to.. if you completely reshape it or that guide and make the bowl & short turn right for it.. it will still flow a bunch of air. I wouldn't mind seeing some Dyno testing with the same head casting ported two different ways. Let somebody try and lay it back and do the stereotypical shape and let someone else exploit the original Port design.... .550 lift cam [email protected] 280 adv dur 106 cl 108 lsa...then a .550, [email protected] 280 dur, 109 cl 112 lsa
Rpm/vic 340 750 9.9comp & street headers. It's basically the crossover of high lift or low lift... but theres room for an edge.