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The camshaft is a Crane PowerMax retrofit hydraulic roller. Duration at 0.050 is 236 degrees intake/240 degrees exhaust; valve lift is 0.621/0.631-inch with the factory rocker arm ratio. The cam is designed to make power from 3,500 to 7,000 rpm, right in the meat of a hot Cleveland's powerband. With Crane Cams undergoing reorganization, the PowerMax cam is not currently available. A close alternative is a Comp Cams Magnum roller grind with 244 degrees duration at 0.050 and 0.612-inch valve lift; the powerband is a little lower at 2,500 to 6,000 rpm. View Related Article
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