[edman87]

It is worth whatever someone is willing to pay and that depends on how bad you want to sell. If you don't really want to part with it, throw out a real high number, and if buyer agrees, both of you are happy. If you are desperate to sell, it is worth a lot less.
Realisticly, in my opinion, I would say it is worth +- 1500. I know you couldn't build it from scratch for that, but figure half of what $ you invested as a bottom line. I am assuming all the proper machine work was done when you built it, quality new pistons no more than .030 over, 4 bolt mains and quality crank turned no more than .010 under.