I bought an old house with a big garage next door, Anyways there are many engine blocks in the garage.  atleast 4 big block chevy's  i got the numbers off of one block 3916321 and it says it 68 427 385-435 horsepower.
 bare block but had a crank sitting on it, Not sure if its the original crank.

anyways can someone give me an idea what this block might be worth?

I will try and get the numbers off the other blocks and see if anyone can help me with them also

 thanks  

Would it happen to be aluminum?

Sorry, we can dream can't we?  

not aluminum, i wish