On the 2.5 4 cylinder
step 1 18 ft lbs.
step 2 26 ft lbs. except bolt #9 re tighten it to 18 ft. lbs.
step 3 all bolts an additional 90 degrees.
intake manifold bolts 65 ft lbs.
on the 3.3L V6
step 1 35 ft lbs.
step 2 tighten all bolts an additional 130 degrees
step 3 tighten center 4 bolts an additional 30 degrees
intake manifold bolts 88 in. lbs.
SOURCE: cylinder head bolt torque chevrolet 3.4
here is the troque spec for the cylinder heads.
Cylinder Head Bolt
60 N·m
44 lb ft
95 degrees
Cylinder Head Bolt
60 N·m
44 lb ft
95 degrees
Cylinder Head Bolt
60 N·m
44 lb ft
95 degrees
first pass 44 ftlbs
second pass 95 degrees
SOURCE: need head bolt, intake manifold, and exhaust torque specs
Cylinder Head Bolt Step1- (25 FT.Lbs) Step2(45 Ft.Lbs) Step3(65Ft,Lbs).....Intake Manifold(35Ft Lbs)....Exhaust Manifold Center (20Ft Lbs) All Others (20 Ftlbs).....Thanks
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