Holley/Demon Carb stumble

I agree 100% with skrews. Before you buy any more plugs call NGK and let them pick the plug. I'm only about 78% comfortable picking an NGK plug. I'd bet my house and the wife on my Champion pick. But if you want to use NGK's I have zero issues with it. They are a bit harder for me to read.


And FWIW...I wouldn't bet everything on my Champion plug pick. I'd wager my wife. But not the house. I can replace the old ball and chain pretty easy. The house not so much.