Four Valve Build Heart And Soul 019
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17 The finished product is a smooth, machined surface that flows a significantly larger amount of air than the unported castings. Stock, these heads flow 267 cfm at 0.500-inch lift on the intake side, with 182 cfm at 0.500-inch lift on the exhaust side. Livernois’ ported versions flow 310 cfm on the intake side, and 255 cfm on the exhaust side, both at 0.500-inch lift. View Related Article
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