1969 340-s engine block color.

If I were you, I would verify the vin number on the block against the vin.

From everything I know, it should not be blue. That leaves 2 options, it has been painted or changed.

The engine block numbers matching and trans . It still has the factory carb, intake ,exhaust maifolds,valve covers and oil pan it came from the factory with. any parts that had been changed over the years are in boxes from the first owner who ordered this car from the dealer in St Louis....I just trying to figure out if I need to chage the color to what it should be. Its more blue than greenish color more like a letter build mopar small block........THX.