After months of waiting for my 427 Stroker to be built, I am at a loss as to what I should be using as far as plugs is concerned. (at least a starting point) The engine builder builds race motors more than street motors. I will be taking the NO2 out.. (yeah, I'm gonna chicken out)

Any suggestions will be appreciated.

 

Everyone seems to have luck with NGK's stock cubed or not.....

 

i'd use the NGK TR6s

 

I have ngk tr6 plugs also for an 11-1 compression ratio. They have worked great for 4k miles.