My grandad was an old school welder; he was born in 1918 and learned things like hammer welding, cast iron repair and gas aluminum welding and used them every single day. He had 2 big anvils in the shop; a cast one and a forged one. Yes there is a difference, no its not easy to tell and I have a feeling the larger the object, the easier it is to hear the difference.
There was a cast 262 (yeah I said it 262) crank; I think its actually 3.10" stroke, but its a large journal crank if Im not mistaken. I heard of guys using them in a 283 block (why not just blueprint a 307 I dunno).
Now; chevelles.com list that as a 1964 crank and is labeled as cast or forged???
interesting... Over the counter service replacement?