Don thanks for posting...I'll take your port opening dimensions of 2.600 x 1.300 as the head flange numbers. Sorry for the confusion but I did mean the beginning runner area at the plenum of the Tiger intake. Not sure if the as cast intake has +7 sq inches.
At this point these are quite a bit less than 3.38 sq in. at the flange.
Avg Velocity of 420cfm through a 3.38sq in opening would be right at 300ft/sec...From all indications we have that number would work real good.
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