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Originally Posted by cgeise

Calvin - -Did you find the numbers that you got prior to your work - -your baseline -- similar to the advertised numbers for these heads ??

These heads came with flow data, the numbers were close to what we evaluated on our bench, also inline with what Troy said, within 2%.

Calvin Hill
Hill Performance / Mondello Tech Center
708-250-7420

[Milepost]

I've always liked the Tiger heads and felt that they are the ultimate all out classic inline race head but even though I've entertained the thought of putting a set on a serious street car I also realized it wouldn't make any sense unless you run .800 inches of lift or more to maximize the heads potential. ( which kinda throws the street part out the window.....) Thanks to Calvin Hill and Bill Anderson's port modifications we now have a "streetable" Tiger that flows over 440 CFM at around .750''-800" with strong mid flow numbers to boot. I've been told by a reliable source that the CSA went from 3.55" to only 3.61"!! So here is my dilemma....... do I buy a pair to put on a 535 inch Pro Tour/ Texas Mile 72 Firebird and then use my ported CV-1 heads on a future drag build or should I hold out and see how the new Edelbrock Pro ports turn out.