Quote:
Originally Posted by Formulajones
Paul C. down in Tucson finished up a set of 7F6's for a 455 I built a while back. They were initially ported by Dan Barton and after Paul was done with them, improving the flow by changing the valve job angles around, they flowed 282 CFM. They didn't appear to be massively ported either, just a very nice job, all done by hand, no CNC program. Paul noted that he flowed several ports and they were all within a couple CFM of each other.
Paul was working on his own set of 670's at the time and experimenting with different things. I don't remember the flow numbers exactly but I remember them being similarly impressive.
Not overly difficult to reach these numbers with iron Pontiac heads but it's not cheap.
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He is going to get my HO heads for a freshen up-port work. Might used some custom valves like the 5.7 Hemi valves he used but longer. If he can get 300cfm out of them that would be something.
Thats the plan after I run my High Port a season or two. Going to see how much power I can make with a 9-1 461.