At .500" lift the magazine article reported 256 intake and 226 exhaust at 28". There has always been some controversy with the numbers.
calculating header design
http://garage.grumpysperformance.com...er-design.185/
And if you get a KRE product involved in the discussion be aware their flow bench is a Pitot Tube type. It does not correlate with a SuperFlow Edge Orifice type bench in any way. Thus for interest if you get looking at formulas they work on Edge Orifice Flow Benches.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/
Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE