Some M1 porting pictures and flow numbers

Does PBR have these heads on hand? I’d love to hear what he has to say about them. I know he said the trick-flows would be tricky (pun intended) to squeeze bigger valves in them because of the seats. Seeing as these two heads are very close in price, I’d love to know if he thinks he can get more out of the shockers.

@pittsburghracer


I do not have the heads