Fastener torques?

[Jeff W]

Good site for fastener torque numbers on an aluminum Gen IV LS3? Found a few but they seem off. Tightening seems “soft” rather than firm when approaching torque. I don’t want to overtorque and strip threads, so confirming I have the right numbers would be helpful.

 

[Mark B.]

Here's one I've used: https://www.michiganmotorsports.com/ls-lt-engine-torque-specs/

Make sure you check the threads in the block/heads and use a thread chaser / degreaser to clean them out. Even after being hot-tanked, I've seen reputable shops leave gunk in the threads which will mess up your torque values.

 

[Jeff W]

Thanks. Got a better quality torque wrench too. The “click” happens at the right feel now.