Chevrolet LS turbo

Spark plug for Chevrolet LS turbo 

  Application N/A / Forced induction   Spark plug   Recommended gap in MM
  Stock or mildly modified all motor   NGK-TR5       1,01
  Stock or mildly modified all motor   NGK-TR55   0,89-1,14
  Low boost less than 14 psi or small nitrous 150 shot   NGK-TR6   0,63-0,76
  High boost 18-26 lbs big nitrous 250 shot   NGK-BR7EF       0,5-0,6