SOURCE: head bolts torque settings
According to my haynes manual for G-S reg, 1989-1998 it goes as follows,
Stage 1:- Tighten all bolts by hand until bolt heads just contact cyl. head.
Stage 2:-Tighten all bolts to 40Nm or 30lb ft.
Stage 3:-Angle tighten all bolts a further 60 degrees.
Stage 4:-Angle tighten all bolts again a further 60 degrees.
Stage 5:- M12 x 140mm bolts ONLY angle tighten a further 20 degrees.
Hope this helps everyone, sorry it seems longwinded but that is how it's written in the manual.
SOURCE: head bolt torque spec
Always use new head bolts.
1)tighten to 40ft/lbs
2)back off 1/2 turn
3)tighten back to 40ft/lbs
4)tighten an additional 90 degrees
5)tighten an additional 90 degrees.
SOURCE: 2004 chevy aveo cylinder head bolt torque how many
Step 1: 18 lb.-ft.
Step 2: additional 60 degrees.
Step 3: additional 60 degrees.
Step 4: additional 60 degrees.
Step 5: additional 10 degrees.
Each step involves starting at the center two bolts of the head and alternately tightening in a criss-cross pattern, ending with the bolts on the outer edge of the head.
SOURCE: Need 2003 Chevy Malibu, 3.1 ltr v-6 head bolt torque specs
torque all at 44 ft. lbs. the first time then an additional 95 degrees on all the second time and thats it. you will need a degree wheel to do the torque the second time, thank you and let me know if i can help anymore help
Testimonial: "Thanks alot! Had already called our local parts house for the info."
SOURCE: need torque specs for 83 chevy 350 cylinder head bolts.
Hello there
Torque
Specs
These specs may not be correct for your
application.
Verify your engine specs with a service manual
for your year and model.
always
torque
bolts in three equal increments
Bolts or Parts
Lube or Sealer
Torque to:
7/16 Main Caps (2 bolt)
Engine Oil
70 ft-lbs.
7/16 Inner Main Caps (4 bolt)
Engine Oil
70 ft-lbs.
7/16 Outer Main Caps (4 bolt)
Engine Oil
65 ft-lbs.
3/8 Outer Main Caps (4 bolt)
Engine Oil
40 ft-lbs.
Warning!!! If you
are using ARP bolts, you MUST use
their specs. Click Here!
3/8 Connecting Rod Bolt
Engine Oil
45 ft-lbs.
11/32 Connecting Rod Bolt
Engine Oil
45 ft-lbs.
Cylinder
Heads
Engine
oil
(blind hole)
Sealer
(water
jacket)
65 ft-lbs.
Rocker Studs (screw-in)
Engine Oil
50 ft-lbs.
Oil Pump
Engine Oil
65 ft-lbs.
Oil Pan
Engine Oil
12 ft-lbs.
Cam Sprocket (upper gear)
Thread Locker
20 ft-lbs.
Timing Cover
Engine Oil
6 ft-lbs.
Intake
Manifold
(Cast Iron
Heads)
Non- Hardening Sealer
30 ft-lbs.
Valve Cover
Engine Oil
3 ft-lbs.
Exhaust Manifold
Anti-Seize Lubricant
25 ft-lbs.
Spark Plugs
No Lube or Sealer
20 ft-lbs.
Flexplate
(Automatic)
Flywheel
(Clutch)
Thread Locker
60 ft-lbs.
Clutch Pressure Plate
Thread Locker
35 ft-lbs.
Centerbolt
(Harmonic
Damper)
Engine Oil
60 ft-lbs.
Bellhousing
(Transmission
to Block)
Engine Oil
25 ft-lbs.
Head
Bolt Tightening Sequence
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