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Thread: whats the best spark plugs??? and whats the best performance mods for $900???

  1. #11
    Join Date
    Jan 2010
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    spanaway wa
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    im also having problems with my flowmaster and rust had it for only 6 months and its already pretty rusted, love the sound but i should have bought a magnaflow.

  2. #12
    Join Date
    Feb 2009
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    ok i put in the plugs and i swear it seems like it lost power.... i left them gapped at .040 because i kept reading up on them and thats around where everyone else was saying they should be. but i gapped my acdelco's i put in before at .060, should i take these out and regapp them to .060?
    02 5.3 sierra rcsb,its stock i swear ....

  3. #13
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    Quote Originally Posted by 02gmcbandit View Post
    ok i put in the plugs and i swear it seems like it lost power.... i left them gapped at .040 because i kept reading up on them and thats around where everyone else was saying they should be. but i gapped my acdelco's i put in before at .060, should i take these out and regapp them to .060?
    You want to gap the TR6's at .055 That is the best setting for them.
    '04 Silverado RCSB with a crank bolt.

    You know your truck sounds good when cops ask you to get on it.

    Idle Clip

  4. #14
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    Jan 2008
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    u guys run ngk tr6 on n/a applications thought they were only for f/i?hmm i run the original ac delco iridium,arent they better than them tr6?

  5. #15
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    Quote Originally Posted by STUNNA View Post
    u guys run ngk tr6 on n/a applications thought they were only for f/i?hmm i run the original ac delco iridium,arent they better than them tr6?
    The NGK's are better than the ac delco's. The TR6's will work with F/I, but better for N/A. If you running spray the best one is the TR55's gapped at about .050 The 55's are a colder plug.
    '04 Silverado RCSB with a crank bolt.

    You know your truck sounds good when cops ask you to get on it.

    Idle Clip

  6. #16
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    May 2010
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    el paso, tx
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    Quote Originally Posted by RADO_4U2NV View Post
    The NGK's are better than the ac delco's. The TR6's will work with F/I, but better for N/A. If you running spray the best one is the TR55's gapped at about .050 The 55's are a colder plug.
    i thought it was the other way around. tr6 being 1 heat range colder
    06ccsb, cammed, stalled, geared

  7. #17
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    Mar 2007
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    Quote Originally Posted by 06Sierra2 View Post
    i thought it was the other way around. tr6 being 1 heat range colder
    You're right. The higher the number, the colder the plug. Most N/A guys run TR55's. Most FI and N2O guys run TR6 or colder.
    Big slow mud truck with a TUNE!!!!!!

  8. #18
    Join Date
    Feb 2009
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    you well regapped em to .060 and theyre ok. not AMAZING or anything like some people say, but better than the acdelco's i had in ...but truck is down now thanks to a broken extention housing
    02 5.3 sierra rcsb,its stock i swear ....

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