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The intake port will measure in at about 220cc, and feeds a 2.08-inch valve. The chambers should measure out at about 64cc, and Shaver's port work will result in solid flow numbers. His goals for these heads are to flow 330 cfm at .700-inch lift, and 265 cfm at .700 inch of lift on the exhaust side. These measurements are at 28 inches of water with the head mounted on a 4.125-inch cylinder on the flowbench.