I have never seen that but I would say the cam lobe is pushing the lifter off to the side while raising it. That would require a different camshaft. The 300 is known for gear coming loose on cam from nut loosening. If it hasn't already damaged block I would say that it will if you just put a new lifter back in it. I saw a cam bearing work it's way forward once and get under a lifter and held valve open. Never know what you find in these engines.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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