2004 Pontiac Grand Prix cylinder.head

2004 PONTIAC GRAND PRIX
140,000 MILES • 3.8L • 6 CYL • FWD • AUTOMATIC
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THOMASGO
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Manual says to torque and turn head bolts addtional 120 degrees but instructions that came with new gaskets and bolts says to turn bolts 1-2-3-4 an additional 30 degrees. Whats right
Nov 2, 2014 at 10:37 AM
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FREEMBA
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This is what my manuals says:

Install NEW cylinder head bolts. Torque the bolts in sequence, as follows:
Step 1: 37 ft. lbs. (50 Nm).
Step 2: Plus 120 degree turn.
Step 3: Rotate the 4 center bolts an additional 30 degrees.
Nov 2, 2014 at 11:20 AM