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anybody run these ?


I used to w/ good results. Only sold mine earlier this year after deciding maybe I could go faster w/ ported Victor heads (not proven yet...)
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how much porting do these heads need ?


Quite a bit, since out of the box they're really not "ready to run". That includes setting the guide clearance, doing a good valve job, etc.
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can you get 330 c.f.m.


That's more than I think 95% of the ported Stage VIs (not counting Chapman's CNC'd castings) have ever seen. Figure more like 310+ w/ standard 2.14" valves. There's an archived thread under the OLD Moparts tech articles (linked from front page, not from forum index) that covers some of this stuff from years ago.
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and who does the best porting


Well, I know who did mine and he's the same person I'd send a set to if I was doing them again: Porter Racing Heads, S. Burlington, VT

Last edited by BradH; 12/23/11 02:42 PM.