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Thread: Blown Head gasket 302 with a 671

  1. #1

    Blown Head gasket 302 with a 671

    I have a blown head gasket on 1976 sbf 302 with a 671. The block bored 30 over. What size head gasket do I need and what is the best? Copper? I am running the boost 6-8 psi it's 18% under driven. I need a model #.

  2. #2
    Junior Member JOURNEYMAN
    Join Date
    Sep 2005
    Posts
    26
    stick with a felpro series head gaskets esp. the black type gaskets / what is your compression numbers at also what is your fuel system like just make sure you didn't run lean and blow the gasket that way as well good luck joe g 8)

  3. #3
    Senior Member DYNO OPERATOR
    Join Date
    Aug 2007
    Location
    Lost Creek, WV
    Posts
    533
    Depending on what thickness you want...You can go with a cometic C5511-xxx gasket and be good to go.

    TS1955

  4. #4
    Junior Member APPRENTICE
    Join Date
    Sep 2012
    Posts
    20
    Blown head gasket on 1976 SBF 302 Australia

    Head gasket leak test then maybe need
    Replacement

  5. #5
    Senior Member SENIOR BUILDER
    Join Date
    Dec 2005
    Posts
    117
    Quote Originally Posted by joe2412
    stick with a felpro series head gaskets esp. the black type gaskets / what is your compression numbers at also what is your fuel system like just make sure you didn't run lean and blow the gasket that way as well good luck joe g 8)
    X2 good advice! i like the felpro 1003 gasket for SBC, use something similar if you can...and make sure your fuel and fuel system are up to the task


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