ID and aprox value running 440/727 ?

I bought a 50K mile '70 dated 440 with trans a couple weeks ago for $500.00. Took it home, poured some Marvel mystery oil in cylinders and let it sit overnite. Dropped the pan and cleaned out the gunk. It has a forged crank everything looked good so I pre oiled it and dropped the trans pan. Changed the filter and put in new fluid. Poured some gas in the carb and it fired right up. It looked like a scene from Road Runner with all the black smoke that blew out. I'm calling it the "Acme Engine"...