I've got a 2014 5.3 which won't take the tr6 or the usually nitrous plugs does anyone have a suggestion? I'm running 150 shot on it.

 

I Have been in touch with both NGK and Autolite and both of them have told me that they do not have anything available yet as far as a colder plug. However autolite said that there part number XP5243 is the one that they call for in the new 5.3's and it is the coldest one in that group of plugs. Down side to it is that it is an iriduim plug which really isn't ideal for nitrous, and is a projected tip plug.

Hopefully they will keep me updated with anything they come up with.

Trey

 

Trey,
Check out champion RS9YC. Two steps colder than stock just haven't figured out the gap yet.

James