I recall around $500. But figure $500 to ship an engine to OH. DHL used to ship heavy parts cheap, but that is gone. Big shops w/ accounts can ship affordably, but the rest of us are shut out.
In the last 5 yrs, I have seen whole cars around me on craigslist w/ alum slant (usually 1963) for ~$800. But, if it has been sitting w/ coolant in the block it is likely corroded beyond use. This ad might return. craigslist only runs an ad ~10 days, then you have to remember to re-post it. I'd rather put stuff on ebay and list until it sells, which might be a year before someone needing the part sees it.