Hey here's the deal, I am doing a ls6 head and intake swap as we speak. I will be running the stock cam and the ls6 heads and intake, and in the next couple of weeks I will be running a low psi STS turbo setup. Now what spark plugs should I put in right now? Can I run a lower temp plug right now for a few weeks without the boost? thanks for any help!!!!

 

i use the NGK tr55, some people use the NGK tr6 though for nitrous. So the same might pertain to you and boost.

 

TR6's they're good for NA and will be perfect for running boost