Head bolt toque specs 5.3 vortex

[ChevyZ71#]

Can someone tell me the head bolt torque specs and pattern to go in looked all over the internet and it seems like everything I look at is different 

[davester]

I would suggest getting a subscription to the full-service manual at a site like alldatadiy.com , it'll have the definitive answer to your question, and as well how to do the rest of the job right (like bolt pattern/specs for the intake and exhaust manifolds, and everything else you need to bolt up)...

[Ian Mills]

A Haynes manual would also have the specs you need

[KWD2]

I agree with getting a haynes for your year model they are worth it

[davester]

Haynes is better than nothing, but having compared the full service manual with the haynes for my truck, and with other haynes manuals, I find most of the info in the Haynes to be generic and shared between all their manuals, with very little vehicle-specific info.

 

For comparison, the FSM for my truck is 5 volumes, of over 1000 pages each (so, 5 old school phonebooks), while the Haynes manual is 352 pages, and much of it is generic info that applies to all vehicles...

 

If you plan on generally getting other people to work on your truck, and only fix the odd bit yourself, get the Haynes, but if you want to diagnose and fix your truck going forward, the FSM will serve you much better.

Edited December 17, 2020 by davester

[Ian Mills]

13 minutes ago, davester said:

Haynes is better than nothing, but...

Right, the FSM is way better but it's much easier and cheaper to get your hands on a Haynes and I know for sure that they have to torque spec for the head bolts

[davester]

The online subscription is pretty easy to get, and $50 for 5 years doesn't exactly break the bank...

Edited December 17, 2020 by davester

[redvett]

1. Dont forget the head bolts must be replaced each time they are removed they are  torque to yield.

[ChevyZ71#]

2 hours ago, redvett said:

1. Dont forget the head bolts must be replaced each time they are removed they are  torque to yield.

Yea I got new ones just trying to figure out what to torque them to

[Mike GMC]

See photos below from my Haynes manual.  Hope this helps.

[Mike GMC]

Sorry, the first pic of the sequence did not come out well, missing info. All numbers are ft-lbs.

Edited December 18, 2020 by Mike GMC

[Gagliano7]

The torque specs and sequence is all over the internet. 

 

https://www.jegs.com/s/tech-articles/ls-engine-specs.html&title=LS+Chevy+Engine+Specifications

[tlaw91]

Here at the dealer we take our impacts and hit them ugga Duggas on all the bolts in any sequence we feel, wait a couple minutes, then go for another round of ugga duggas. Works every time, no complaints, much easier on my back, etc etc etc
Don’t forget to prey when you turn it on the first time though that step is critical

[EXSlider400]

Just finishing up a set of lifters in an 07 NNBS RC SWB G80.  The 90 then 70 degree was almost impossible for me since I did not have the tool (and did not Mark lines on bolt heads) so after the 22 in sequence I went to torque further but it did not “feel” right... like it was supposed to torque but it would not and instead the boat was doing its thing and stretching. So needless to say I removed all of the head bolts bought new ones and then bought the tool. In all honesty the tool was a waste of money because that cheap dial tool didn’t work worth a crap because it kept slipping and not indicating the boat was turning so some advice make sure you mark the baldhead regardless because after a few bolts I stopped using the tool and just went off the marks.  Good gasket kit, clean surfaces and bolt holes, used copper spray. Should be done Thursday when the exhaust bolts come in. I purchased truck new in 06 and the motor has over 400k and for the $350 spent in parts it is a gamble every day it is driven anyway...only thing other than fluid/filter changes performed as required, I added cruise control and replaced an alternator.  For under 20k new, I “Got” my money out of the truck 
 

also had the driver rear exhaust bolt break off and could not get out so while heads were off I installed the $20 bracket fix. Know what is worth spending your money on. 

Edited March 9, 2021 by EXSlider400