474ci Engine Build - Pump-Gas Poncho Power
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Working within Hall's parameters, Butler Performance sent a custom-ground hydraulic-roller camshaft and lifter set from Comp Cams. Duration at 0.050-inch lobe lift is 242/248 degrees and lobe separation angle is at 110 degrees. Gross valve lift, when combined with 1.5:1-ratio rocker arms, is 0.540/0.562 inch. View Related Article
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