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The throttle body is actually 1.77 square inches. 38mm diameter. His calculators don't allow to fix the area and calculate just the length vs rpm. I assume that the stock 1.77 square inches will still fairly closely follow theory for a 14 inch runner resonating at the desired 6,000 rpm. The over sized cross area only serving to broaden and round off the peak slightly.
Last edited by sendler; 01-28-2012 at 10:38 PM..
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