J.C. the Indy 600-13 heads claim numbers in the 500cfm range with 2.450 valves. Sounds reasonable, I made some flow plates with just hole diameters and a hand formed clay radius to compare possible flow through a hole (roughly the seat diameter) and flow numbers of the intake runner/valve seat I was porting on. Used to know those numbers pretty good. Not positive, but I'm pretty sure a 2.300 hole will flow 500cfm @28 inches!
They (aftermarket dodge) have same problem wedge head that just doesn't show the HP to airflow numbers that canted valves or Hemi Heads do. I like watching the B-1 guys, they are doing similar things that Pontiac guys are doing.
-Rob
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10-25-2003, 12:24 PM
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