Yellow Bullet Forums banner

Which Spark Plugs are the best?

1 reading
19K views 51 replies 29 participants last post by  BYBYLS1  
#1 ·
I run a mildly built 383 Stroker in my Drag car. About 450-500 HP. Which spark plugs should I be running in it?
 
#10 ·
I run AC plugs in all my iron head stuff, (Chevy SB). Have to run a shorty Accel on 1 cylinder on my street car as headers are too close and burn the boot. Old ACs were shorter and weren't a problem. Run NGK on my Dart aluminum heads but I'm going to try ACs in it when it goes back together.
 
#23 · (Edited)
douglas said:
I prefer to run an American produced spark plug. I believe in keeping Americans employed and keeping our economy strong.
There is an NGK spark plug plant here in West Virginia. It's in Sissonville... about an hour from where I live. I know people who work there.
 
#24 ·
Friend used to use Champion in his 440, don't remember the story but they were all bad. They were the racing plug and when he go in touch with the they tried to blow him off. He told them to look at their stock and sure enough the ones they had were bad too. Wish I could remember what was wrong but you could see it with your naked eye. They were being made in Mexico. He got a whole bunch of free ones for pointing it out to them.
 
#25 ·
The old guy that taught me how to cut cut down ground electrodes said NGK had the best metal in their ground electrodes as far as shaping them goes.

In a pinch I'll do out of the box Autolites but usually, I buy 4 or 5 sets of NGK's at a time and get to whittling on them with a 1" belt sander.

I asked a couple of the crew guys in a Pro Stock pit if they would mind if I looked at an old spark plug just for the hell of it. The guy was cool about letting me look, those guys really do a number on them.
 
#33 · (Edited)
Looks like YB took a shit, but the gold plating may well have had cadmium or chromium in it.