Little Big Chief - Part I: Basic Machining - Pontiac Tech
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Once the bronze inserts were installed, a special reamer was employed to provide the proper valve stem-to-guide clearance, which is 0.0015. (This photo is for explanation purposes only, as this head is not the No. 17.) Though the No. 17 had press-in studs, RaceKrafters upgraded it to screw-ins during the rebuilding process. View Related Article
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