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    Has anyone installed or seen the 3.4 headers on a 3.1? If so, does it still work with the smog equipment or does it need modification?
    91 Firebird 3.1<br />SC12 Supercharger<br />LSD w/ 3.73s<br />NOS 80hp wet shot<br />AKA: Phoenix<br />\"If Speed Kills...Consider Me Dead.\"

  • #2
    3.4 headers have to heated & bentto clear the firewall. I may/maynot be able to use the stock 3.4 y-pipe on the car. The s-10 headers , I believe, also have clearance problems that a torch & pipe cannot fix.
    1978 Formula 461 in progress of being built :rock:
    2013 Ram 1500 Big Horn

    former owner of 85 bird w/ 2.8 - 3.4 - 3800 II - 5.0
    94 comero 3.4

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    • #3
      What about emissions, like the EGR?
      91 Firebird 3.1<br />SC12 Supercharger<br />LSD w/ 3.73s<br />NOS 80hp wet shot<br />AKA: Phoenix<br />\"If Speed Kills...Consider Me Dead.\"

      Comment


      • #4
        check the specs on them. the 3.4 motor I have has the EGR in the same place, just the digital version.
        1978 Formula 461 in progress of being built :rock:
        2013 Ram 1500 Big Horn

        former owner of 85 bird w/ 2.8 - 3.4 - 3800 II - 5.0
        94 comero 3.4

        Comment

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