Spark Plug Options for Tune

Discussion in 'Generation 4 - Performance Upgrades' started by HELLBOUNDSHO, Oct 7, 2019.

  1. HELLBOUNDSHO

    HELLBOUNDSHO New Member

    Joined:
    Oct 3, 2019
    Messages:
    16
    Likes Received:
    3
    Gender:
    Male
    Occupation:
    Correctional Officer
    Location:
    Ohio
    Just purchased my Gearhead tuner but didn’t get the power pack as I figured it would be cheaper to get the spark plugs myself. Only problem is I’ve seen multiple recommendations for which motor craft spark plug to get.

    SOMEONE PLEASE CLARIFY WHICH AND WHY! Thank you!

    (I’m sorry if this was answered in another thread)
     
  2. mattr66

    mattr66 SHO Member

    Joined:
    Sep 3, 2015
    Messages:
    177
    Likes Received:
    362
    SP542 gapped to .026. colder plug. it's need to prevent preignition.

    Sent from my Moto Z (2) using Tapatalk
     
    jtreber, SM105K, luigisho and 2 others like this.
  3. Jordan_R

    Jordan_R SHO Member

    Joined:
    Sep 20, 2017
    Messages:
    105
    Likes Received:
    178
    Sp542 like Matt said. There are NGK equivalents but they don't like to hold the tighter .026 gap like the sp542.

    Also Matt has some very specific non negotiable things when he tunes sho. Plugs being one of them.
     
    SHOdded likes this.

Share This Page

If you wish to help keep SHOforum running, please click the donation button below