Pleasant surprise.. it IS a 340.

I bought the car from my nephew 10 years ago. He only had it a month or so. My brother said he had this engine running, sounded pretty lopey. I had enough brains to fill the cylinders with trans fluid through the years, it's not locked up.

That's awesome. That means you might can tear it down put new rings. bearings and sprAngs in it and back together you go. lol I love that kinda stuff.