[Striker2237]

5.9 magnum based 408 with a novi 2000, stock plugs are champion 3436 and I was going to just drop down two heat ranges but am considering a different plug entirely based on responses to this thread.

 

[434nova72ss]

non projected tip for boost

 

[Striker2237]

I bought a set of NGK 5030 plugs, we will see how they run