Quote:
Originally Posted by Silverback51
The "I" value for a 3.00 diameter, .125 wall round tube is 1.17 inches to the fourth.
The "I" value for a 3.00 x 3.00, .125 thick wall square tube is 1.98 inches to the fourth.
Sorry for the same size a square tube is stronger.
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They're really not the same size. A square tube is also about 27% heavier.
Even though a round intake port is the most efficient, your analogy is like saying a square 3" intake port will flow more than a 3" round port, which it will.