What is the torque setting for head bolts on Chevy 5.7 liter vortec?

There's no single torque specification for head bolts on a Chevy 5.7L Vortec engine. The torque spec depends on the specific year and model of the vehicle, as well as whether the engine is a Gen I, Gen II, or Gen III Vortec 5700. Even within those generations, there might be variations.

You absolutely must consult a factory service manual for your specific vehicle's year and engine code. This manual will provide the correct torque specifications, along with the proper tightening sequence (which is crucial to avoid warping the head). Using the incorrect torque can lead to serious engine damage.

Don't rely on internet forums or generalized information; always use the factory service manual. You can usually find these manuals online through various retailers or websites specializing in automotive repair information.