Torque spec and sequence for the head bolts

Tiny
JEFFJ
  • MEMBER
  • 2007 CHEVROLET SILVERADO
  • 190,000 MILES
Can you tell me the torque spec and sequence for torquing the head bolt on the truck listed above it has the 5.3l V-8 non-fuel management engine?
Thursday, October 13th, 2011 AT 3:57 PM

4 Replies

Tiny
DAN_K
  • MECHANIC
  • 213 POSTS
Tighten the cylinder head bolts.
Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb ft).
Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees using J 45059.
Tighten the M11 cylinder head bolts (1-10) a final pass to 70 degrees using J 45059.
Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

Use an accurate torque wrench, a good torque-angle meter and new cylinder head bolts.

Here is a video to help

https://youtu.be/juOClONIWeY

You will find the sequence in the picture (attached) for the heads and intake
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Thursday, October 13th, 2011 AT 4:19 PM
Tiny
JEFFJ
  • MEMBER
  • 36 POSTS
On my head I have fifteen bolts. Five of which are m8 and m10 that are m11. The specs still the same.
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Saturday, October 15th, 2011 AT 1:25 PM
Tiny
JOANNA FERNANDEZ
  • MEMBER
  • 3 POSTS
What is it for a 2012 gmc sierra 5.3?
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Friday, January 31st, 2020 AT 3:26 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hi Joanna,

They will be different. Please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

Cheers, Ken
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Monday, February 3rd, 2020 AT 10:51 AM

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