[wallz55]

Hi I everybody I have a 512 casting 4 bolt block with CRR on the front and c23 70 date on the back it is .030 and will go back .030. it has the big oil pressure hole on the side and it has no cracks or issues i ran this block personally until I wanted to go bigger and when with a different block. I have seen these blocks go for 5,500 on ebay I would like to get $3,500 out of mine I will ad pictures as soon as I can