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Thread: SBC Head gasket question
          
   
   

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  1. #1
    jlbruce is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 69 Chevelle
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    SBC Head gasket question

     



    I am building a SBC with Edelbrock aluminum heads and intake.

    I noticed the head gasket between the 3/5 and 4/6 cylinders has small (1/8") holes, but the block and heads water channels have much larger holes (1").

    Can I drill out the head gasket to match the heads/block? I never drive my car in the winter so I would like to keep it as cool as possible.

  2. #2
    Racecar100 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 1940 Ford Coupe
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    Just put it on it won't effect it at all.

  3. #3
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: BLOWN 540 57 CHEVY
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    Quote Originally Posted by jlbruce
    I am building a SBC with Edelbrock aluminum heads and intake.

    I noticed the head gasket between the 3/5 and 4/6 cylinders has small (1/8") holes, but the block and heads water channels have much larger holes (1").

    Can I drill out the head gasket to match the heads/block? I never drive my car in the winter so I would like to keep it as cool as possible.
    You are not by chance talking about the "steam holes" in a 400 SBC head gasket.

  4. #4
    jlbruce is offline CHR Member Visit my Photo Gallery
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    Erik

    Yes, they are the small holes that line up with the water channels on a SBC (I have a photo on my "See Photos")

  5. #5
    erik erikson's Avatar
    erik erikson is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by jlbruce
    Erik

    Yes, they are the small holes that line up with the water channels on a SBC (I have a photo on my "See Photos")
    Sorry,I did'nt see your photo's.
    Those are not the 400 steam holes.
    Yes,just leave the gaskets how they are.

  6. #6
    thesals's Avatar
    thesals is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 66 mustangFB, 69 econline Drag Van
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    those holes should stay like that, they're supposed to slow the water down to allow more heat transfer before getting back to the radiator
    just because your car is faster, doesn't mean i cant outdrive you... give me a curvy mountain road and i'll beat you any day

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