How much horsepower and torque does a 454 Chevy big block in a 1977 suburban have?

The 454 Chevy big block engine in a 1977 Suburban typically produces around 230 to 250 horsepower and approximately 360 to 400 lb-ft of torque, depending on the specific configuration and any modifications. This engine was known for its robust performance, making it suitable for heavy-duty applications like towing and hauling. Keep in mind that actual numbers can vary based on factors such as maintenance and engine condition.