Numbers question

A quick question for MrMopartech or anyone who can help. can anyone tell me what these numbers on the block mean ; casting number R/H & L/H side reads 2468130 . On L/H side of block has numbers 16 1 70 . On R/H side of block down near oil pan what appears to be an engine number I or 1 F 180363. It's supposed to be a 383. Thanks in advance.
Author: admin