* Specific year and model of the engine: Even within the "350 small-block Chevy" family, there are variations over the years.
* Rod bearing material: Different materials require different tightening procedures.
* Type of connecting rod: The design of the connecting rod can influence the torque specification.
* Condition of the engine: If the engine is being rebuilt, the condition of the crankshaft journals and rod bearings will impact the procedure.
You absolutely cannot rely on a single number found online. Always consult a factory service manual specific to the *exact* year, model, and engine code of your Chevy 350. These manuals will provide the correct torque specifications and the proper tightening procedure (often a phased approach, not just a single torque value). Using an incorrect torque spec can lead to severely damaged bearings and catastrophic engine failure.
If you don't have a service manual, consider purchasing one or consulting a qualified engine rebuilder. They have the expertise and resources to ensure your engine is assembled correctly.
