6.1 cylinder head bolt tq specs

Correct the 12s get the extra 90 degrees the 8s do not
Cylinder Head—Bolts
M-12 Bolts
Step 1 34N-M 25FT. —
Step 2 54N-M 40FT. —
Step 3 Turn 90°

M-8 Bolts —
Step 1 20N-M 15FT. —
Step 2 34N-M 25FT NO EXTRA TURN REQUIRED