71 340 engine value

$2,000 is a good deal if it's a good engine. Just spend some time thoroughly inspecting it before you purchase it. Run a compression check if possible and check bearing clearances. Why is it being sold for relatively cheap if it was rebuilt? I have about $1,500 in machine work for my 340 and there's no way I'd sell it for $2,000 unless there was something wrong with it and it needed a lot of work. A good block can sell for over $400 that needs the works. If you can listen to it run, fantastic. If you can't, you definitely want to spend the time to inspect it to make sure you're not being taken for a fool. It would suck to buy a "rebuilt" 340 just to put it in the car and find a nasty knock and burned valves or somethin'.