Jared, I think your date code is F206 (sorry I don't know what con2 is.)
meaning F=June, 20=Day, 6=Year.
http://www.yearone.com/yodnn/tech/ve...2/default.aspx
on this website at the towards the bottom of the page, it says
T0205EG – engines for models through 1969
V0525CNR – engines for 1970-and-later models
your engine casting says the year is between 1963 to 1976 so that 6 could be 66 or 76. But the above website says 2 didgit suffix codes were 69 and earlier. So that would make your block a 1966.
The suffix code of UH I could only find in one place. Here.
http://www.gmcpauls.com/67-72_chevy.htm
And It only says UH=292 6cyl and that's on the 67=72 page. There should be more info on the UH code. Hopefully a guru will chime in.
