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header bolt torque

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by lasvegas, Sep 17, 2001.

  1. lasvegas

    lasvegas 1/2 ton status

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    Anyone know what is correct-ish torque for header bolts? I was guessing maybe 20-25 lbs.? I have Thorley headers which have a really thick flange if that matters.
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    I would go tighter. I use a wrench and torque them down as hard as I can. They will loosen up if you dont. Also retighten after a week. If they are going into iron heads dont worry about stripping them, I havent seen it yet.

    86 Jimmy 4"lift 35"MTRs Other cars 69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  3. Neil

    Neil 1/2 ton status

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    It's 30 on aluminum and 50-65 on iron heads. &amp; retighten after some use.

    Neil H. Alabama.. "It's a full size thang, Jeep owners don't understand!!" '78 K5 400ci 4x4 AT,AC,PW Cheyenne., '74 C10 4x2
     

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