* The specific year and application of the 350: Different years had different block castings and designs, affecting bolt strength and recommended torque.
* The type of main bearing studs or bolts: Are they standard bolts, ARP studs, or something else? Different materials and designs have different strength ratings.
* The condition of the engine block: A cracked or otherwise damaged block will necessitate different tightening procedures.
* The type of lubricant used: The recommended torque will often be specified for a particular type of engine oil or assembly lubricant.
Therefore, you CANNOT rely on a single number. You absolutely must consult a reputable engine rebuilding manual specific to your 350 Chevy engine's year and specifications. This manual will provide the correct torque sequence and specifications for your specific engine. Improper tightening can lead to serious engine damage, including a cracked block.
Attempting to find the torque without this information is risky. Using an incorrect torque value could easily damage your engine.
