Help decode sbc to606ctb

[madden]

hi guys

sorry.........had to restart the thread as i could not see how to add the pics of the block to the original thread

so as started it is:
- a 4 bolt main
-0010 casting
-010 020 nickel block
-prefix stamp T0606CTB

1970 nova
car retains its original key fob and trunk dealership emblem
sbc
with 2110 intake
202 #186 heads B.19.0 AND B.18.0 dates

4 spd M21
12 bolt 4:10 posi-trac

i could not find any date casting number on the block?

thx
chris