Need info on this block
Look at the pictures of the 1969 blocks below from 440 sorce . The drain plug in the block location? and the strengthening ribs?. The drain plug looks simular to the later cold weather industrial blocks. The last picture is of the industrial block it looks close but it is different.
First picture is a early block without the rib
Second stated on 69 model on E440 code
Third is the industrial cold weather block
The block above looks close but its not. There is no casting numbereither