Engine Stamp Pad Questions

The factory Maltese cross just meant the crank was nicked or had issues from day 1, had to be machined .010 under to clean up. I have read that most 4 speed cranks were steel. The small bit of literature I have for '71 shows both 2 and 4 bbl 383's w 8.5 comp. Depending on what heads you go w and intended purpose, pistons may be the best way to get good compression.