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Though the engine was designed only to run to 6,500 rpm, valvetrain control was still deemed important enough to use Jesel shaft rockers and heavy-duty ⅜-inch pushrods. Per EMC rules, lift was limited to .650 inch and Randy’s cam was .010 under that, but they were still able to run a solid-roller cam. He mentioned that the COMP cam they ran ended up with a hydraulic-roller intake lobe and a solid-roller exhaust lobe for best performance. View Related Article
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