Cadillac Repair: torque, bolt specifications, cadillac seville

Question
i need to know the head bolt specifications for a 1997 cadillac seville northstar 32 valve 4.6

Answer
Tighten head bolts in sequence from center outward:

                6-3-1-4-5
Front of engine:
               10-7-2-8-9

Initial tightness: 38 ft. lbs on ALL Bolts
Second tightness:  68 ft. lbs on ALL bolts.
Final tightness:   90 ft lbs on bolts 1-3-4 ONLY.