GM LS7 & LT4 Head, Crank, and Main bolts are all considered stretch to yield bolts. Each bolt must be torque-d to spec according to manufacturer’s degree ratings. Meaning you can old use them once. When installing these bolts be careful to read instructions. These bolts are not the old school torque to lb.
- Crank Bolt LS7 LS9 LT1 LT4