* Year of the engine: Torque specifications changed slightly over the years of the 350's production.
* Head Bolt type and Material: Are they stock replacement bolts, aftermarket studs, or a different material (e.g., ARP)? Aftermarket high-performance bolts will have their own torque specifications.
* Main Bearing Cap Bolts: Similar to head bolts, the type and material of the main bearing cap bolts will dictate the torque specification.
* Head Gasket Type: The type of head gasket used can influence tightening procedures. Some gaskets require specific torquing patterns.
* Condition of the engine block: Any damage or warpage to the block can affect tightening procedures.
Therefore, you absolutely MUST consult a repair manual specific to the year and model of your Chevy Malibu and the exact engine it contains. These manuals will provide the correct torque specifications and tightening procedures. Using the wrong torque can lead to severely damaged engine components.
You can find these manuals online (often as PDFs) or at auto parts stores. Searching for something like "19XX Chevy Malibu 350 Small Block Engine Repair Manual" (replacing 19XX with the year) should help you find the appropriate resource.
Do not attempt to torque the engine without the correct manual. Improper torque can result in blown head gaskets, warped heads, or even cracked engine blocks. It is far better to take the time to locate the correct manual before proceeding.