1969-1970 #512 Chevrolet 4 bolt block
 

Factory 3963512 casting block dated L-2-9 which is December 2nd 1969. The block is a real 4 bolt block that is 60 over and had one sleeve installed. I had the block cleaned, magged and pressure tested and have the paperwork on the block. The block is good and does not have any numbers on the front pad. $1750 and I can ship reasonable if you cannot pick it up. 330-770-2517