[Alan Roehrich]

There's not many options to add material back, welding, in any form, is difficult with cast iron, and prone to inducing cracking. There were once a couple of shops that specialized in welding and/or furnace brazing cast iron, but I haven't seen evidence of them being in business in at least a decade or two. The main one was High Speed Salvage.It's a lost/dying art. You'd also have to find someone good enough to remachine the block after. The heating process required for welding will also take the seasoning out of the block, it will be like a new green casting, which isn't good for performance use.