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  1. #1
    Join Date
    Dec 2019
    Location
    Texas
    Posts
    3
    Country Flag: United States

    Preferred LS spark plugs?

    I built a 2005 LS6 with an Eagle 383 stroker kit and now need plugs.

    Factory plugs call out

    NGK IX Iridium Spark Plug 7397
    or
    Bosch Iridium Spark Plug 9602

    And MSD has this:


    MSD Performance Spark Plug 3713

    What do y'all recommend?

    NA motor, no NOS either.

  2. #2
    Join Date
    Jun 2010
    Location
    Deployed
    Posts
    3,118
    Country Flag: United States
    Quote Originally Posted by Swarm49 View Post
    I built a 2005 LS6 with an Eagle 383 stroker kit and now need plugs.

    Factory plugs call out

    NGK IX Iridium Spark Plug 7397
    or
    Bosch Iridium Spark Plug 9602

    And MSD has this:


    MSD Performance Spark Plug 3713

    What do y'all recommend?

    NA motor, no NOS either.
    I use stock Delco replacements in my H/C/I LS7
    1970 Camaro/DSE build


    Are you driver enough? Maybe....come on blue!
    https://www.pro-touring.com/threads/...71#post1147371

  3. #3
    Join Date
    Nov 2014
    Posts
    126
    Country Flag: United States
    same, delco replacement on H/C/I LS3

  4. #4
    Join Date
    Dec 2019
    Location
    Texas
    Posts
    3
    Country Flag: United States
    Thank you both!