1. Tighten the center bolts to 22 ft-lb.
2. Tighten the front bolts to 22 ft-lb.
3. Tighten the rear bolts to 22 ft-lb.
4. Tighten the front and rear bolts to 30 ft-lb.
5. Tighten the intake manifold bolts to 25 ft-lb.
Note: Be sure to use a thread sealant with bolts.