What do you guys think 440 blocks are worth, ran across a guy with 3 of them, one unknown date probably mid 70s complete 440 from a motor home, a 73 440 block, complete from the pistons to the pan and a bare 77 block. I know the 73 and 77 block need machining there all rusty, no clue on the other, there's one 73 HP exhaust manifold and 5 heads. I know 2 are 906. Everything basically cores