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header bolt torque

Discussion in 'The Garage' started by cegusman, Nov 5, 2004.

  1. cegusman

    cegusman 3/4 ton status

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    What do you torque header bolts to? Motor is a SB 400 if that matters
     
  2. kyser_soze

    kyser_soze 1/2 ton status

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    20 ft. lbs. Right out of the chiltons manual for a 1971-1978 SB 400 /forums/images/graemlins/thumb.gif This was for exhaust manifolds not headers but should be the same. Remember this is a cold engine torque, warm up the motor then re-tighten. /forums/images/graemlins/waytogo.gif
     
  3. big83chevy4x4

    big83chevy4x4 3/4 ton status

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    tight as i could get it with a wrench, then check after a day, they are still tight /forums/images/graemlins/woot.gif
     
  4. Rolled

    Rolled 1/2 ton status

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    My dad bought some, pretty slick, header bolts. They have an allan head screw in the center that you tighten and it spreads the bolt just enought to lock em in the head. No more header bolts coming loose!
     

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