Thread: Valve grinding
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Old 06-03-2020, 04:37 PM   #1
ford35lh
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Join Date: May 2010
Location: Upstate; The Real New York
Posts: 450
Default Valve grinding
A Ford item on ebay has this info printed on the back.

Can anyone explain the terminology under the brackets ???



ebay auction#353086210312
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File Type: jpg Ford valve.jpg (58.9 KB, 178 views)
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