Magnum intake torquing pattern. front to rear pass side is 10-6-2-4-7-11. Drivers side front to rear 9-5-1-3-8-12. torque bolts 1-4 in the sequence in 12 inch lb increments to 72 inch lbs. Then the remaining bolts to 72 inch lbs(in sequence). Check that ALL are at 72 inch lbs. If not tighten them up to 72 in sequence. Then tighten ALL bolts to 144 inch lbs in sequence & recheck.