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Old 06-05-2010, 02:55 PM   #9
George/Maine
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Join Date: May 2010
Location: Mid coast Maine
Posts: 1,878
Default Re: 312 Y-block valve lash problems

Something to try,slide the rocker over and check bottom of shaft see if it worn,switch rockers,if that doesn,t help.If the cam was replaced with no change,My guess your lifter,or valve is binding,is push rod hitting head or gasket.
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