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Rapidfire Spark Plugs - Anyone Tried Them?

This is a discussion on Rapidfire Spark Plugs - Anyone Tried Them? within the Internal Engine forums, part of the LSx Technical Help Section category; GM Rapidfire Spark Plugs - Anyone Tried Them? What is the best (sure to get 10 answers here) replacement spark ...

  1. #1
    Platypus Control Director BigFrog's Avatar
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    2002 SS

    Question Rapidfire Spark Plugs - Anyone Tried Them?

    GM Rapidfire Spark Plugs - Anyone Tried Them?

    What is the best (sure to get 10 answers here) replacement spark plug for a stock 2002 SS?

    Let the fireworks begin...
    Black 2002 SS
    SLP Airbox Lid, K&N Filter, Flowmaster Exhaust
    CDT Speakers + Sub

  2. #2
    Member keliente's Avatar
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    99 Firebird Formula

    NGK TR55.

    NGK TR6 if you use nitrous.

    /end thread.

  3. #3
    i would use the delco iridium plugs part no. 41-985 (12571164)these will work great and last a very long time.,

  4. #4
    The Bandit Wesman's Avatar
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    1998 Trans Am WS6

    AC Delco plugs are great. I think they are the best for GM vehicles in general.

    Never used Iridium plugs though, perhaps someone on here has some experience that they can share...

  5. #5
    i'm using them for over a year

  6. #6
    Pontiac Builds Excitement Silverbird01's Avatar
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    Sunset Orange Metallic
    2002 Pontiac TransAm WS6

    NGK TR-55.
    I tried Rapidfire plugs once...................didn't like them. Put the NGK's back in and everything is good again!

  7. #7
    Junior Member Quicksilver Vert's Avatar
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    Quicksilver
    2001 Corvette

    I use Rapidfires with good results in my Chevy truck with a cast iron smallblock engine,but it's only AC Delco iridiums for my LS1 Corvette.

  8. #8
    Junior Member 00SLPSS's Avatar
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    Quote Originally Posted by keliente
    NGK TR55.

    NGK TR6 if you use nitrous.

    /end thread.
    this man knows what he's talking about.

    I've searched poll after poll and threads and these are definaly the most recommended from what I've read.

  9. #9
    Awaiting Activation Liquifire's Avatar
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    Quote Originally Posted by 00SLPSS
    this man knows what he's talking about.

    I've searched poll after poll and threads and these are definaly the most recommended from what I've read.
    woman..........she does know what she is talking about

  10. #10
    Junior Member Quicksilver Vert's Avatar
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    Quicksilver
    2001 Corvette

    Thanks for your compliment 00SLPSS,sharing info.like this is what the Forum is all about!

  11. #11
    Junior Member 00SLPSS's Avatar
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    Quote Originally Posted by Liquifire
    woman..........she does know what she is talking about
    I do not post here much, I was unaware. My apoligies to keliente.
    I'll have to watch my gender posts from now on.

  12. #12
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    I run NGK TR55's in my H/C 402ci. Gapped at .045".

    I will run either those or Delco plugs. Nothing else.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  13. #13
    Junior Member glvr01's Avatar
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    maroon
    2000 Camaro

    NGK TR-55 I just had these put in two days ago. Well worth it. I had the car on the Dyno with the original (AC Delco) and then after with the TR-55 Engine seemed to run better on the TR-55 (Of course could have been the other mods too!!!!!)

  14. #14
    Member cailey37's Avatar
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    1998 Pontiac Trans Am

    NGK's are great.....but I have to tell ya...after I read an article in GM Highperformance I gave Brisk Sparkplugs a shot and I have to admit they are something! Only problem is they are a little high and it's hard to find them.....Great throttle response with them and they even seemed to outperform the NGK's.......

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