Are these swirl ports?

dartfreak75 said
That is interesting. I did not know that. So all small block open chambered heads are swirl ports???
What about closed chambers heads are they swirl ports also??

RustyRatRod said
I don't think they did testing on closed chamber stuff. They had no need for 273 stuff. All of the testing I am aware of was done on the 318/340 and 360 open chamber heads. It wouldn't surprise me if the closed chambers were too, because Chrysler was ahead of the times like that.

I was waiting for somebody to say something.
"Swirl port", that means port, not chamber.
That's a chrysler sb thing, others did it too...but I never heard any echos as loud as the mopar one.
There is no difference between a 915 and 308 'intake port' other than the push rod pinch.

Thanks for the revist, it was fun.