How much does a Cast iron engine block weight for a gasoline?

A cast iron engine block for a gasoline engine typically weighs between 150 to 400 pounds (68 to 181 kg), depending on the engine's size and design. Smaller four-cylinder blocks tend to be on the lighter end of the spectrum, while larger V8 blocks can weigh significantly more. The weight can also vary based on additional features like integrated components or design variations.