It's worth more than that in parts
.
Assuming that a truck block with standard bore (possibly needing to be bored) can go for $2000, then 333 heads are worth $200, oil pan $250-$300, crank around $300 and timing chain cover $50, it can add up
. Might salvage the rods as well, but that's generally a wash if they need R&R'd.
A good deal would be $1200 - $2000. Just MHO...
Often times one needs to take the risk on a "running engine", but it's better than one that is locked up from sitting for decades...
TomK