A number of years ago, I picked up a "509" casting 400 sbc short block. I don't see anywhere in the near future where I'll end up using this motor, especially now that I have an Oldsmobile. I know that its difficult to gauge what something like this would be worth sight unseen, but if anyone has a ballpark idea, it might help me decide if I'll end up parting with it or holding on to it. The short block is disassembled currently.