Found a set of y block heads with what appears to be 4AE: for the casting numbers. Home » Keeping The Dream Alive! » Technical http://forums.y-blocksforever.com/Topic130562.aspx

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By 61shortboxhiboy - 8 Years Ago I can find no matches for these heads so far i have been searching for hours on end, on different sites and so far nothing. Does anyone here know what they where used for origonally? Thanks in advance By Ted - 8 Years Ago If that ‘4AE’ is located on the exhaust side of the heads, then that is likely the date code which makes it 1954.  At that point check to see if the spark plugs are 14mm which would help to verify that they are indeed heads cast in 1954.  Later model heads would have 18mm spark plugs.  Beyond that, some pictures of the heads showing the casting marks and combustion chambers might help to get a more positive identification.