does anyone know how to identify the year of a TH350. No one can seem to help with the casting no.s behind convertor. i also have the id code from pad on pass side near starter but doesnt really decode with any info i have. the casting no behind convertor is 6260233 and the id code on pass side is 16Z419384. ther is no other identity on pan, or on either side of the trani on the round metal parts that usualil tell if buick, chev, etc. thanks

 

Looks like its from a 1976 corvette , 1 = chev, 6= model year , Z= corvette, rest is serial #.