Mild-Mannered 440 Mauler - Part 4, The Top End Build
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Indy's port shape owes a great deal to the use of longer valves than those used in production heads. Notice the difference between the stock-length valve (left), and the Indy valve (right). The longer valves allow for a taller, flow enhancing, short turn, and a deeper bowl with more cross-sectional area, as well as room for improved valvespring installed height. Many advantages here. View Related Article
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