F0516J
F= Flint, MI assembly plant
05 = May
16 = 16th
J = 3100-3800 regular production 235 in a truck

CON3 = block Conveyor #3

E 14 2
E = 5 = May
14 = 14th
2 = 1962

Head casting code 3836848: 1956-1963

8769716 = ?
3769716 = 1958-1962 235 block