Quote:
Originally Posted by 1928Pickuppain
i don't remember which ones are which but either my exhaust valves or my intake valves say FoMoCo the other is plane with the two holes both low profile with a knife like edge. I think these are original? never checked to see if they were magnetic. Do they sound origional?
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Valves shouldn't have a knife edge as that can run hot and cause preignition, especially on the exhaust. Either replace those valves or at least grind away the knife edge.