i need help with spark plug selection
Stock 243 heads
Tsp 288r cam
Long tubes
And a couple other small mods
I am Putting down 390 at the wheel.
I was told by my buddy i need to run a step colder plug bc i have about a 100 more hp then stock and that you should go a step colder for every 100 hp you gain. So my question is what kind of plug should i run. I was told the br7 would be perfect for my set. Any input would be greatly appreciated.


Forced induction, nitrous cars, etc should consider making heat range and/or gap changes, but if you're not experiencing a specific problem, just remember: "If it ain't broke, don't fix it".
HTH


