the block is probably 3970010 or 014
the heads are scrap get rid of them now before they ruin your bottom end, 624 are the worstheads out of all the heads GM ever made, 882 are second worst., lots of cracks and very cheap thin wall casting they are, unfortunately both castings are very common, i scrapped 4 sets of 882 last fall and a couple 624 and found a set on the 85 350 that i removed and am scrapping too after i rob the pipe plug and temp sender off them
good luck
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Randy- Lincoln, IL
randy@ccaonline.com 2177353230
*many GM parts bought, traded, or sold -am parting out: '81 Cutlass Supreme Brougham
current fleet: -71 C-10 350/CH465/3.07- basketcase, #1
-90 Cavalier 2.2L sky blue, a driver
-84 Z28 5.0L/700R4/3.73 daily driver
-84 Firebird/SE 2.8L/T-5/3.73/engine bad, project #2
-82 purple Trans Am, project #3
*Paint is overrated*
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