Wanted to replace my spark plugs this weekend. I wanted to know what's the best plug to use?? I'm currently running autolite. Also what gap should I set these at. It's for a sts turbo app. with full msd ignition - opti,coil, etc,etc on a stock lt1 engine

 

I was told NGK TR6 with a .35 gap, Thats what I will be installing today, Although mine is for supercharger but I was told NOS,Turbo,Supercharger this IS THE PLUG TO GO WITH!!!!!!!!!!

 

Two ranges colder than stock for boost at 0.035-0.040" gap.

Please search the FI forums for more more detail.


Edit: Autolites are fine, I run the 104 copper core at 0.035".

-Scott.