are you saying you are already looking @ an engine that does not knock & no smoke & you want to know how much you should pay for it?

Is it a 4 bbl engine? 1 BBl?

As a guess, a running 1 BBl sprint engine could sell for 200 - 400

If it's a good 4bbl engine 600-1000 range, that's a guess. They are pretty rare nowadays, @ least I do not see them that often.
These would be Ca prices. Not some guy on a farm w/the engine in his barn.

Hope this helps

MBHD


12 port SDS EFI