If im corerct ZBA is the suffix is for a 1979 and 1982 vette 350
ZBA 1979 350 m/t, L82 4 225hp 4 Vette
ZBA 1982 350 Cross-fire inject L83 8 200hp TTBI Vette
Suffix seems to be explained ,,,here is a link to all casting #'s to confirm block and head I.D.,,,,
Great info here, may take a second or 2 to load,,,,
http://web.archive.org/web/20090429004445/http://www.mortec.com/
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