Well...I saw that on my 89 when I did the BHG. Nothing was in the threaded hole, so I lefyt it alone. Perhaps it was there for factory install of head on block?? To hang head from chain or something.
Interesting picture.
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Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing.
TEMS, and some nice MODS. Sold to a friend 10/08/08.
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