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Best Spark Plugs

This is a discussion on Best Spark Plugs within the Firebird / WS6 forums, part of the Vehicle Specific category; I am in the process of installing GM Ported LS6 Heads, SLP LS6 intake, Pacesetter LT headers with ORY, and ...

  1. #1
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    Best Spark Plugs

    I am in the process of installing GM Ported LS6 Heads, SLP LS6 intake, Pacesetter LT headers with ORY, and TR Cam 228/228 .588/.588 112 LSA. I was wondering what kind of spark plugs are best for my setup?

  2. #2
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    NGK TR55 plugs and I would swap in some MSD wires while you are at it, good maintenance while everything is torn apart

  3. #3
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Gonna be ready for that 85-100 RWHP jump when you get in that beast afterwards??? Hopefully you are getting her tuned right?

  4. #4
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    NGK TR55. irridum or non-irridum?

  5. #5
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    irridium are supposed to be stronger and last longer, hence the higher price.

  6. #6
    JMAC Racing WS6ICK's Avatar
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    Are the AC Delco Irridium any good?

  7. #7
    Senior Member INMY01TA's Avatar
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    2001 Trans Am (sold)

    NGK TR55 copper. Gapped at .055. Sounds like a good array of parts you got there.

  8. #8
    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
    00 Black Ram Air Trans Am

    Quote Originally Posted by INMY01TA View Post
    NGK TR55 copper. Gapped at .055. Sounds like a good array of parts you got there.
    +1 someone did their homework before modding

  9. #9
    Rice Killa JwMonE99's Avatar
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    Black With T-Tops
    96 Z28 M6

    Bottom line what is the best plugs?

  10. #10
    Senior Member Wheeler99WS6's Avatar
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    black, 05 Roush
    black, 99 T/A WS.6

    NGK TR55IX (iridium) for me
    1999 T/A WS6 Black -------SOLD
    05 mustang Roush sport;
    DOB manifold, m122 SC, 47lb injectors, gt500 TB, roush TVS CAI, Detroit rocker SC grind camshafts, Mac LTs, off road x, roush off road mufflers, roush short throw shifter, kenne bell BAP, Brenspeed 93 octane tune. 479rwhp 436ftlbs SAE.

  11. #11
    Senior Member Redphoenix1998's Avatar
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    I wouldn't go iridium personally. I ran AC Delco and NGK Iridium's and the spark was just too hot for the setup. Had some Pre det problems because of the spark plug

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