TwistedMinis
+1y
Its absolutely possible to weld to a cast center section. But the first thing you need to do is figure out if it is cast steel or cast iron. The way to properly weld to each of them is vastly different. The fastest way to tell the difference is a grind test. You use a hard grinding wheel, and grind on the questioned surface. Cast iron will throw a very short redish orange spark, up to about 4 inches away from the grinder. Cast steel will throw an lighter orange to yellow spark and will be thrown over a foot away from the grinder.
If you can determine the material we will be able to give you the proper technique. I will tell you welding to cast steel is much easier than cast iron, but neither of them are "easy" per say.