[RICK LAKE]

cobranc Both motors are worth something. Even more if a restoration is being done. 427 blocks are thin wall. In the old days you got pistons to go .002"-.005"-.010" over size to get max life out of a block.It sounds like a boat motor block you have. The 428 block with thicker webbing and correct parts would be worth more. Finding the person doing a restoration and wanting to spend the money is the problem.
The car you got, was the owner telling you it has a 427? Did you ask if it's a Sideoiler? You could also have a 390 block with heavy webbing.
No sure where you are going with this. If you have the motor in the car, enjoy it. Rick L.