engine casting#

[bluedreamOG]

hello everyone!! just recently joined here and i must say i like it!! anywho heres my question. on rear of block are the following: 3970010. on pad on passenger side are three lines of stamped numbers. middle row are larger numbers..

C8B167303
V0605TDB
T8B529219


i bought this bare block with crank and pistons from a guy for $100. its never been machined... thanks for any help

 

[bluedreamOG]

also to add, it is a 4 bolt main. so does that mean its a 350? and does it have the 2.3" mains or the 2.45" ?? some help wud be greatly appreciated!!