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LS Motors - HEAD STUDS - TORQUE SPECS ???

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Old Nov 1, 2020 | 06:27 PM
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Default LS Motors - HEAD STUDS - TORQUE SPECS ???
QUESTION . . . When using Head Studs on an LS block ( iron LQ4, in this case ), instead of Bolts, what is the correct Torque Spec, since Head Studs don't "Torque To Yield" ?

Thanks, in advance !
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Old Nov 1, 2020 | 06:36 PM
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The head studs should have come with torque specs.
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Old Nov 1, 2020 | 08:53 PM
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^^^He's correct. The torque specs depend on the specific studs you bought.
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Old Nov 2, 2020 | 06:32 AM
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Here. This should work. https://arpinstructions.com/instructions/134-3610.pdf
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Old Nov 3, 2020 | 12:35 AM
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The above is for BOLTS. Here’s the STUD instructions
https://cdn2.arp-bolts.com/instructi...lat-washer.pdf
https://arp-bolts.com/kits/instructi...?RecordID=5177
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Old Nov 3, 2020 | 07:14 AM
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Originally Posted by Joystick
Thanks! I didn't even catch that!
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Old Nov 3, 2020 | 09:57 AM
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Originally Posted by ez2cdave
QUESTION . . . When using Head Studs on an LS block ( iron LQ4, in this case ), instead of Bolts, what is the correct Torque Spec, since Head Studs don't "Torque To Yield" ?

Thanks, in advance !
That depends on the material grade of the studs. The cheap ebay studs seem to be the same alloy as the stock bolts, while ARP has at least three different alloys (8740, ARP2000, L19, etc). Each will have a different recommended torque value.
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