SAVE THAT BLOCK!!!
I have read where they can now save some of these old cracked blocks and heads. I forget where I read it, but I know that they were starting to do this more and more since a lot of the antique parts are just getting too hard, if not impossible to find.
I don't remember if it is "metal stitching" or "furnace welding" or "pinning" or some kind of brazing, but I do remember having to drill the ends of the cracks to keep it from spreading, making a V groove, and stuff. I have read it not that long ago actually...wish I can remember where I read it...I'll have to look through some stuff when I have a minute.
Anyone else know what I am talking about?????
Anyways...there is only one matching number block for your rig, and it is worth (at least in my opinion) to look into this to see if it can be saved