what's it worth ? ,70 340 engine

$1000 is a very good price for what you have, don't give it away they are to hard to come by these days. Std bore never blown up, no repairs $1000 for bare block if you ask me. There is a guy by me that wants $2000 for a fully machined 340 block, he has 2 and they both have sleeves, 1 has 2 the other has 3 and they are both .060 over. I would never buy one with that much work done to it.