Realistik ,its worth about 500 to 1500 depending on the buyer,if its a standard rebuild,if its full of high end racing parts and aluminum heads maybe 4000,but its used ,with no warranty and unless the builder is a well known one .........I bought a used 305 with less than 3000 miles for 75 dollars.
A 460 is more desirable than a 305 ,what casting numbers are on the block and what heads does it have...?
The guy down the street has a 90 extended cab 8 foot bed f-250 with a fuel injected 460 ,low miles,thats been for sale at 2500 for a long time ,truck looks new too ,no rust or clear coat peel at all,also has a fiberglass campershell.