Torque specs for heads a 3.4L gm?

There isn't a single torque spec for the head bolts on a 3.4L GM engine. The specification varies depending on the *specific* year and model of the vehicle. The engine itself might be the same 3.4L, but the head bolt torque will change based on the application.

To find the correct torque specification, you MUST consult a repair manual specific to your vehicle's year, make, and model. This manual will provide the proper sequence and torque values for tightening the head bolts. Using the incorrect torque can lead to serious engine damage.

You can usually find these manuals online (often as PDFs) through sites like:

* Chilton's: Offers repair manuals for many vehicles.

* Haynes: Similar to Chilton's, providing DIY repair information.

* Factory service manuals: These are usually more detailed and accurate, but can be more expensive. You may be able to find them online or at a parts store.

Do not attempt this repair without the correct information. Incorrect torque can lead to warped heads, blown head gaskets, or other catastrophic engine failure.