spark plug recommendations

[Catwood]

It's time to change plugs in the Viper. I have the BTR 650 kit and run the nitrous on occasion. Currently have the stock heat range. Anyone have an opinion?

TIA,
Carl

 

[PRVT JET]

Try autolite 3923, they are colder and are recommended for nitrous use.

 

[ChicagoGTS]

Do a search on NGK! Or call them direct very knowledgable people.

~Matt~

 

[Devin 97 Blue GTS]

I recommend the NGK ZFR6F-11 spark plugs //gap 33//