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5.3L Torquing Stretch Bolts


Max Simmons

Question

Replacing heads on my '04 5.3 liter in a Silverado 1500. The specs call for torqueing to 22lbs then another pass tightening 90 deg, then 3rd pass at 70 deg.

On second pass, I could not get several bolts to the 90 deg mark, even using a 24" bar. They are closer to 70 deg. I'm not a weakling but am concerned about torqueing any harder than I already have.

Advice?

 

Thanks in advance!

 

 

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My understanding of torque to yield bolts is that once you are past the initial specific torque and have committed to first angle degree torque, you are beyond the point of no return and any backing off to chase thread holes or other such remedies, you need to install a new fresh set of torque to yield bolts.

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My understanding of torque to yield bolts is that once you are past the initial specific torque and have committed to first angle degree torque, you are beyond the point of no return and any backing off to chase thread holes or other such remedies, you need to install a new fresh set of torque to yield bolts.

 

 

Correct.

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