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Torque pattern (head bolts)

Discussion in 'The Garage' started by Hossbaby50, Sep 15, 2004.

  1. Hossbaby50

    Hossbaby50 3/4 ton status

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    I was wondering if anyone has the torque pattern for tightening head bolts. I am going to be doing a set of head gaskets on a 79 400SBC today or tomorrow and need to know the pattern to tighten them down and also the torque I need to set the bolts at.

    Any other tips for head gaskets? Thanks

    Harley
     
  2. Z3PR

    Z3PR Banned

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    Start in the center and work your way out.
     
  3. Ryan B.

    Ryan B. 3/4 ton status GMOTM Winner

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    I believe the torque spec is 60-70 ft lbs.
    I just did a cam and heads on a friends engine, couldn't find the torque pattern in any manuals he had laying around, or searching on the net, so i just torqued em to 65 ft lbs. from the center working my way out in a symmetrical pattern..
    Also torque them like 30%, 60%, 90% and then 100% of their torque value to ensure they all get torqued evenly.
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Thats how me and my bro did mine , 40,000 miles ago . No problems whatsoever , been a good running motor and my DD/wheeler /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif

    OH , and Harley , use a Fel-Pro gasket set , they are complete and good quality /forums/images/graemlins/waytogo.gif
     
  5. Hossbaby50

    Hossbaby50 3/4 ton status

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    Fel-pro gaskets are the only gaskets I use on motors. I used all felpro stuff on my truck when I did the TPI swap.
     

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