Z How To Choose A Camshaft Flat Tappet
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3 Like flat tappet cams and original equipment timing sets, factory rocker arms create frictional losses. From left to right are conventional (’62-‘66), rail style (late ’66-’76), and stamped steel bolt-fulcrum (’77-up) for small-blocks. Bolt-fulcrum style is also found on the 351C (except Boss and H.O.) and 429 CJ. View Related Article
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