302 casting swirl port heads

I m having an argument about the 302 heads casting . Is it really a swirl PORt ? or a fast burn chamber because of heart shape ? I ve posted a chevy "swirl port"
Anyone have a picture of the stock intake 83171d1100905955-swirl-port-heads-why-ports.png port ?

Interesting, I have never seen a picture and didn't take mine apart.