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Plugs fouling out

Discussion in '2nd Gen Camaro (1970-1981 Camaro)' started by Bluthunder, Feb 29, 2024.

  1. Bluthunder

    I installed Headman Headers on the 327 Cu in Small Block in my 1979 Camaro. While doing so I replaced the plugs with a shorty, Accel 576S plug to obtain more clearance between plugs and headers. Ever since the car has been running rough and the number 2 and 7 cylinder plugs have been gas fouling out causing missing and occasional back fire on acceleration. The original plugs were Delco R45t. So is this the problem? Do I need to go back to OEM plugs?
     
    Bluthunder, Feb 29, 2024
    #1
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  2. Z28/Ken Staff Member Admin

    Perhaps they aren't in the correct heat range or need to be gapped down a little. What are they gapped to now?
     
    Z28/Ken, Feb 29, 2024
    #2

  3. Bluthunder

    The gap was .030 and I have a Mallory Hy Fyre Ignition. I am replacing them with ACR44 Plugs gapped to .040
     
    Bluthunder, Mar 1, 2024
    #3

  4. Zspoiler

    What type of ignition are running ?
     
    Zspoiler, May 1, 2024
    #4

  5. Bluthunder

    Yes I am running a Mallory Hy Fyre Ignition.
     
    Bluthunder, May 2, 2024
    #5

  6. Zspoiler

    Then you should gap them at 040-45
     
    Zspoiler, May 2, 2024
    #6
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