I need to install the head bolts but need to know where the two smaller bolts go.
Sep 8, 2022 at 3:42 PM
Cylinder head bolt installation?
2010 CHEVROLET SILVERADO
CSAUSA
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Hello,
2003 on 5.3 engines use 10 11mm head bolts which need to be replaced and 5 8mm head bolts which can be reused.
Tightening torque and degree:
11mm bolts, (1-10)
1st step: 22 ft/lbs
Next 2 steps you will need to use an angle gauge, see image 2
2nd step: (1-10) turn an additional 90 degrees
3rd step: (1-10) turn an additional 70 degrees
8mm bolts, (11-15)
22 ft/lbs, apply liquid Teflon paste or similar sealant to these bolts
See image 1 below for tightening sequence
Hope this helps,
Cheers, Boris
2003 on 5.3 engines use 10 11mm head bolts which need to be replaced and 5 8mm head bolts which can be reused.
Tightening torque and degree:
11mm bolts, (1-10)
1st step: 22 ft/lbs
Next 2 steps you will need to use an angle gauge, see image 2
2nd step: (1-10) turn an additional 90 degrees
3rd step: (1-10) turn an additional 70 degrees
8mm bolts, (11-15)
22 ft/lbs, apply liquid Teflon paste or similar sealant to these bolts
See image 1 below for tightening sequence
Hope this helps,
Cheers, Boris
Images (Click to enlarge)
Sep 9, 2022 at 12:59 AM
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