Thread: spark plug too cold?

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  1. #1 spark plug too cold? 
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    running AL104s gapped at .55 with my setup when Im idling and rev it up it will show misfires on the scangauge and it will hop around from cylinder to cylinder..no cels...is the spark plug too cold should I gap them at .56? Im gonna switch to ngk tr6s hopefully that will fix it

    can runs fine
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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  2. #2 Re: spark plug too cold? 
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    TR6's are just as cold.

    Try 605's instead.
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  3. #3 Re: spark plug too cold? 
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    +1 for 605s... maybe even stock plugs at your mod level.
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  4. #4 Re: spark plug too cold? 
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    okay ill try ngk tr55s(same as al605s)....I remember awhile back someone told me it could be an arcing problem...plugs and wires have probably 6k on them..wires are oem ac delcos
    3.6 pulley, tune, ported lim, fenderwell, 3" DP, PLOG, 180 tstat
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  5. #5 Re: spark plug too cold? 
    GTX Level Member Doug 97 gtp's Avatar
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    605's for the win

    1997 GTP . repainted in jet black with blue pearl. rebuilt motor
    with vs cam ported heads and blower.
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