5.3 Head Install and Torque Spec/Sequence

[@jorge56188]

Amazing video and information. The only thing I’m stuck here wondering why didn’t you tell us the foot pound for 9 and 10 just like you did for the rest of the bolts which you told us the degree and ft lbs

[@3rdGenC10s]

@@jorge56188 I’ll be purchasing another LS soon and will be doing a complete video series over the entire build no matter how small the detail I’ll make sure I put all the info in the next video.

[@seananthames7017]

That’s exactly what I came for

[@3rdGenC10s]

@@seananthames7017 first pass they are 22 ft lb second pass 90° third pass 50°

[@davidmartinez1072]

What was the final torque spec on bolt 9 and 10 in ftlb

[@3rdGenC10s]

Everything is in the description.

[@brandoncrawford3664]

Once the final passes complete, is there a final torque spec that should be equal across all bolts?

[@3rdGenC10s]

The final torque is degree it’s not a set number unless using ARP fasteners. Since they are torque to yield with the final passes being in degrees the torque will vary from bolt to bolt but be within a few pounds of each other.

[@JamesShook-l9f]

Thanks for this, much appreciated. Are the bolts 11-15 all the same size?

[@3rdGenC10s]

Yes

[@haydenhale2646]

Do you have to use the angle part?

[@3rdGenC10s]

With the TTY bolts yes. You can buy ARP bolts that are just a torque spec only.

[@johnnygamble7806]

9 and 10 what is the final torque pound?

[@3rdGenC10s]

@@johnnygamble7806 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

[@LeroyJones-z1y]

Great job on the engine. I have 5.3LS L83 Cylinder heads. M12 X 1.75 X 135 bolts. Do you know the torque specs of mine?

[@3rdGenC10s]

help.summitracing.com/knowledgebase/article/HE-04910/en-us

[@georgioocean7629]

I have a 2019 Chevy Silverado. It has a black hex bolt in the front of the cylinder head driver side. What are the torque specs on this? The first degree should be 90 and the last should be 50 because it’s shorter

[@3rdGenC10s]

No idea, haven't messed with a Gen 5 yet.

[@Alienkuun]

What about 07-14 heads?

[@3rdGenC10s]

First pass 22 ft lbs Second pass 90° Final pass 70°

[@hzbz6815]

Same for aluminum block?

[@3rdGenC10s]

@@hzbz6815 help.summitracing.com/app/answers/detail/a_id/5189/~/gen.-3%2C-aluminum-block-torque-specs

[@3rdGenC10s]

@@hzbz6815 help.summitracing.com/app/answers/detail/a_id/5191/~/gen.-4%2C-aluminum-block-torque-specs

[@marthas70652]

Is it the same specs for a chevy 03 5.3L ?

[@3rdGenC10s]

Yes

[@Mtc01p]

Is this the same for a 09?

[@3rdGenC10s]

No torque specs are a little different.

[@Mtc01p]

@3rdGenC10s where can I get the 2009 spec I'm having a hard time finding them

[@3rdGenC10s]

@@Mtc01p help.summitracing.com/knowledgebase/article/SR-05187/en-us

[@ianmartinez8409]

I’m doing my right now but my torque wrench doesn’t seem to have the angle torque

[@ianmartinez8409]

And have the same bolts

[@3rdGenC10s]

You have to purchase one specifically for angles not all torque wrenches have it.

[@CreepyGomez]

I bought a Durofix 1/2" ANGLE digital torque adapter. $85 on Ebay. For use with existing 1/2" breaker bar. Just doing one 2003 LS engine. Positive reviews. Maybe upgrade if I get totally bitten by the LS bug. 1982 Volvo LS swap. Thanks for the well done Video.

[@3rdGenC10s]

Good looking out.

[@joselemus7130]

2021 gmc sierra 5.3?

[@3rdGenC10s]

2003

[@hzbz6815]

2014 5.3 lt 10 bolt ?

[@3rdGenC10s]

This is all o could find for a Gen 5 www.silveradosierra.com/threads/2016-sierra-5-3l-head-torque.731535/

[@johnnygamble7806]

9 and 10 end up 50lb foot torque?

[@3rdGenC10s]

No, they end at 50 degrees.

[@jorge56188]

I understand that both nine and 10 is 50° final pass but what was the foot pound on them????

[@3rdGenC10s]

Don’t know wasn’t concerned with final torque. Just following the the proper steps.

[@jorge56188]

Well, I appreciate you responding back, great video will definitely subscribe, I’m going to torque bolts 9-10 to 50lbs for final pass…. Going to send it

[@JuanDiaz-z4l]

Did the 50lbs work I am wondering the same thing cus I am going to send it as well

[@kipholder8577]

why not go to 65ft pounds and send it. thats what some guys do

[@3rdGenC10s]

I have the tool to do it to GM spec instead of just “sending it”