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Thread: Afr head stud problem

  1. #1
    Junior Member APPRENTICE
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    Afr head stud problem

    Im building a 406 sbc with afr heads with comp double valve spring the outside and inner most exhaust head stud bolt fit but its semi impossiable to get a socket on it ive milled down and grinded one to fit but it doesn't have the strength anymore i had to take so much out i know afr sells resized bolts for just those holes but wondering if anyone had an idea so i dont have to wait till mid next week to get the motor togther

  2. #2
    Senior Member RACING JUNKIE
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    Crowfoot wrench works, however the torque value changes some. i seen it done many times.

    JMO

    Zip.

  3. #3
    Senior Member RACING JUNKIE fla1976's Avatar
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    Here is a site to calculate the torque difference Zip talked about. There is an explanation and calculator.

    http://www.engineersedge.com/manufac...e_wrench_1.htm

  4. #4
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    I tried a set of crowfooted and they don't solve problem the nut had to drop down into a sleeve almost i'm thinking of just running down to a fastenal store and see what if they have a nut with small diameter but same thread

  5. #5
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    GREAT website and info !! Thanks from ME !

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  6. #6
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    Quote Originally Posted by rhino058
    I tried a set of crowfooted and they don't solve problem the nut had to drop down into a sleeve almost i'm thinking of just running down to a fastenal store and see what if they have a nut with small diameter but same thread
    For sure get a grade 8 !!
    TRUTH is HATE
    to those who
    HATE TRUTH

    God Bless our folks in uniform
    "We the People, have your backs"
    http://www.racingjunk.com/profile/279898

  7. #7
    Senior Member MASTER BUILDER
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    Yup, that's always a problem. We use a smaller Arp 12pt nut for the center studs. I'm not sure if fastenal will have anything

  8. #8
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    Has anyone ordered the "Abbrivated" nut that afr sells on there site i just want to make sure someone else has tried them before i was going to cal afr monday am but im on the east coast and they're based out of california just be easy to know if they worked for anyone else

  9. #9
    Senior Member RACING JUNKIE fla1976's Avatar
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    I have used the 12 points from ARP. Don't see that there would be any difference. Definitely has a smaller footprint.


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