This is a SBC 400 crank core. Was planning on building a 400, had it checked by a local machine shop. No cracks and they said it might go standard with a polish but for sure was good for a .10 x .10 grind. First $85 cash or I will accept sterling / junk US silver in trade. Near corner of Cave Creek and Carefree Highway. Lots of other good SBC parts, stock and High Performance will be listing over the next week.