There isn't a single torque spec for all bolts on a Pontiac 350 Big Block engine. The torque specifications vary greatly depending on the specific bolt, its location (head bolts, main caps, etc.), and even the year of the engine. You
must consult a factory service manual specific to the year and model of your Pontiac 350 Big Block engine.
Using the wrong torque specs can lead to serious engine damage, including cracked heads or stripped threads. A factory service manual will provide the correct torque sequence and specifications for every bolt on your engine. You can often find these manuals online (eBay, Amazon) or through specialist automotive parts stores.
