To find the correct torque specification, you must consult a repair manual specific to your vehicle's year, make, and model. These manuals will provide a detailed torque sequence and specifications for each bolt. Using the incorrect torque can lead to head gasket failure, warped heads, or other serious engine damage.
Don't rely on general information found online; always refer to your vehicle's service manual. You can usually find these manuals online (often as PDFs) or purchase them from auto parts stores.