5.3 Head Install and Torque Spec/Sequence

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#c10 #chevy #lsswap #chevytrucks #lsswaptheworld #cammed5.3

Installing and torquing the head on my Junkyard 5.3 with 4.8 Flat top pistons.

Torque Spec and Sequence 99-03 Blocks

M11 Bolts

Step 1 22 lb ft Bolts 1-10
Step 2 90° Bolts 1-10
Step 3 90° Bolts 1-8 Bolts 9&10 50°

M8 Bolts

11-15 22 lb ft

Head Gaskets

4.8 Flat Top Pistons

Rings

Torque Wrench

Head Bolts

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Can someone explain why its “turn 90 degrees” if just ends at 44 ft-lbs? In other words, why didn’t the engineers just say ‘first pass 22 ft-lbs, second pass 44 ft-lbs, etc.‘?

rmDECFRE
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My question is after you torque the heads do you do a dry run start up to seal the gaskets or do you just put the antifreeze in and let it run up to operating temperature

matthewmarrs
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