Spark Plugs

Discussion in 'Performance & Fuel' started by detailjohn, Jun 11, 2009.

  1. detailjohn

    detailjohn Rockstar 100 Posts

    Ok my 06 GMC is getting ready for new spark plugs, any suggestions? I have the 4.8L.

    Thinking about Bosch+4....


    99'HEARTBEAT MODERATOR Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    For me went I was ready for new plugs,I stay with A/C Delco. Iridium Plug's.But it depends on what you are looking for in a plug,and what Performance Mods you have put on your Ride.I've been pleased with the A/C Delco Plugs.I have not really looked into some of the aftermarket plugs,maybe someone else can give you some input on them
  3. 1st Synthetics

    1st Synthetics Epic Member 5+ Years 1000 Posts

    NGK IXIRIDIUM are great plugs. TR5IX is the plugs for your truck I think.
  4. 2ToNe04

    2ToNe04 Epic Member 5+ Years 1000 Posts

    i have bosch, i just replace the ones that came with my truck.

    never had a problem with them
  5. Jimmiee

    Jimmiee Epic Member 5+ Years 1000 Posts

    Iridium plugs have it hands down over platinum. The GM iridium are designed for your combustion chamber and that's what I use. Everyone has their own favorite plug but if you Google "spark plug comparison" you can read up on spark plugs and decide for yourself. Have Fun!
  6. cascott325

    cascott325 Epic Member 5+ Years 1000 Posts

    i run delco iridium
  7. iPublicEnemy47

    iPublicEnemy47 Rockstar 100 Posts

    if you get the bosch let me know how they work out im thinking of getting them for my truck
  8. Dr_Zero

    Dr_Zero Epic Member 5+ Years 500 Posts

  9. ippielb

    ippielb Epic Member 5+ Years ROTM Winner 1000 Posts

    I just got Bosch +4 plugs in my truck last week. I can really tell a difference in throttle response and the ease in starting my truck. I seem to get more acceleration with them too, i also got new spark wires the day after, and i noticed another increase in the same areas with new wires. I recommend them, i like mine a lot.

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