I have a 321 casting 427 block L 18 7 date code block has been decked no suffix on it. It is 60 over a real 4 bolt block. I have this block with a complete motor but it came out of drag car not filled. I want to sell complete motor or i would sell just the block email me at fodoraj@aol.com or give me a call at 513 519 8268 if you are interested. This motor is a running motor shows no signs or cracks never has leaked any water. I am located in mason ohio make me an offer on this i have no idea what it is worth. I know being a 4 bolt block it would have been atleast a 400 hp block