Valve To Piston Clearance
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With more lift, be sure to check valve-to-piston clearance (minimum .100-.120-inch intake and .120-.140-inch exhaust). With the relatively short duration of our cam, and our installed centerline of 108 degrees (straight up), ours cleared with ease. Advancing the cam, more duration, more lift, or higher ratio rockers will all decrease the clearance. View Related Article
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