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Block casting number is 1969, 302,327, or 350. HN is a 327 in 1969, all I see is 'full size'. As mentioned earlier, V is Flint engine assembly, and the rest is mm/dd date code.
Looks like basically the same motor that came in my '78... 3914678 (1968 305,327, or 350), V0703HN (327, full size/Chevy II).