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Cylinder head exhaust ports.

Discussion in 'The Garage' started by SF87K5, Oct 6, 2004.

  1. SF87K5

    SF87K5 1/2 ton status

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    Location:
    Stedman, North Carolina
    I have a 90 5.7 tbi I am going to put headers on friday. I need to know what kind of exhaust ports are on them. Are them the round ones or the square ports?

    It is my DD so I cant just take my exhaust manifolds off. I need to know cuz I am getting the headers friday and they have both types. So can anyone help, pics would be nice also if you can thank. /forums/images/graemlins/thumb.gif
     
  2. SUBFAN

    SUBFAN 1/2 ton status

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    More like a laying down "D"....Either will prolly do, both of my sets have had a round port....
     
  3. bigburban383

    bigburban383 1/2 ton status

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    I got a 90' 5.7 block on a burban and the ports on it are square, well a square with rounded corners.
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I always use the round port header gaskets.
     
  5. bigblock44k5

    bigblock44k5 1/2 ton status

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    Hurlburt Field, FL
    D-shaped, Get rounds....
     

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