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small block headers

  1. Need headers to fit a 74 small block

    Drivetrain & Performance
    Hello, I have ordered a 383, 500hp all forged internals 10:1 that I am supercharging. Going to end up around 800hp, hopefully. In talking to a Procharger dealer he said I need to run 2"-2 1/8" primarys on my headers. I have looked all over and have not had any luck finding them. * Does...
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