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Thread: Head stud torque spec?

  1. #1

    ShiRen's Avatar
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    Head stud torque spec?

    I installed the ARP kit 218-4703 at factory torque spec (50lbft), but the instructions recommended 90lbft. I emailed ARP and they still recommended 90lbft, but they could not guarantee that the head or block can take it. I am sure I can torque them down to like 70lbft, but I don't know about 90lbft. Then again I used a manual 3/8" torque wrench, it was a bit of a bear, I will borrow my buddies 1/2 Snap-on electronic torque wrench if I go any farther. Anybody know what they should be torqued to?



  2. #2
    LXi User InAccordance's Avatar
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    Re: Head stud torque spec?

    You talking about the studs or the nuts?
    Originally posted by ShiRen:
    Nice car or not, nobody likes losing a race to an old 4 door Honda.

  3. #3

    ShiRen's Avatar
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    Re: Head stud torque spec?

    Well everything is hand tight until you put the head on and run the nuts down, so I guess the nuts.

  4. #4
    LXi User Shane86's Avatar
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    Re: Head stud torque spec?

    I do mine in three increments of 30. 30. 60. 90.

  5. #5


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    Re: Head stud torque spec?

    I think the cast iron block should be fine, i put ARP studs on a d16 and we did 90, like shane said, 30-60-90.
    dead white and blue

  6. #6

    ShiRen's Avatar
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    Re: Head stud torque spec?

    Ok, I will back them off and do 90

  7. #7

    89T's Avatar
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    Re: Head stud torque spec?

    Quote Originally Posted by ShiRen View Post
    Ok, I will back them off and do 90
    I did 60-90-110, and at 30 pounds of boost the copper gasket still pushed.

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  8. #8

    ShiRen's Avatar
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    Re: Head stud torque spec?

    Luckily I am not boosted, but I guess torque was nothing to worry about. I do wish we could get an mls head gasket though.

  9. #9

    89T's Avatar
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    Re: Head stud torque spec?

    Quote Originally Posted by ShiRen View Post
    Luckily I am not boosted, but I guess torque was nothing to worry about. I do wish we could get an mls head gasket though.
    Cometic wouldn't even do it if I ordered 10 of them.

    Sent from my SM-G981U using Tapatalk
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    someone make me an offer i just could not say no to.

    3GR

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