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head bolt torque question

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Old Apr 22, 2023 | 12:25 PM
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Default head bolt torque question

I'm going to be doing the heads on my LS2 soon and see that the torque sequence is 22 lb/ft, then 90 degree, then 70 degrees - but I wanted to make sure that it's not different for our aluminum blocks compared to the cast iron truck blocks.

And yes, this is for new OEM TTY bolts.
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Old Apr 22, 2023 | 03:11 PM
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Originally Posted by mcm95403
I'm going to be doing the heads on my LS2 soon and see that the torque sequence is 22 lb/ft, then 90 degree, then 70 degrees - but I wanted to make sure that it's not different for our aluminum blocks compared to the cast iron truck blocks.

And yes, this is for new OEM TTY bolts.
I did ARP bolts which have a different tightening procedure.

My '06 factory workshop manual says for the 10 stock TTY M11 bolts, do three 3 passes: 1) 22 lb-ft, 2) 90°, 3) 70°. For the 5 M8 bolts on top, just do 22 lb-ft and stop.
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Old Apr 22, 2023 | 08:33 PM
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Originally Posted by torquetube
I did ARP bolts which have a different tightening procedure.

My '06 factory workshop manual says for the 10 stock TTY M11 bolts, do three 3 passes: 1) 22 lb-ft, 2) 90°, 3) 70°. For the 5 M8 bolts on top, just do 22 lb-ft and stop.
Thank you sir
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