Highest flowing sbm heads?

And to add to that, my combo surely isn't a optimal combo, just a bunch of stuff I bought in a hurry. All the parts are out of the box on off the shelf items, nothing custom. Based on your m1 porting thread, I'm sure the m1 I have could be better or changed to a better intake.


Like I said before that M1 surprised me but it’s not a ported Victor340. If I had a spare one I’d let you try it.