Spark plug choices

Chad H · January 20, 2004

Hey guys,

I am fixing to order a new set of spark plugs and plug wires. I was looking at some Magnecore wires but didnt know about the plugs? Maybe some NGK's. I will be ordering through Tbyrne. Also, did you guys leave the spark plug heat shields? Or just remove them?

Thanks,

Chad(Flodine)

J-rod · January 20, 2004

Well, for motorcycle/ATV applications ya can't beat NGK in my opinion. Oddly enough thouh, I've never tried em in any of my trucks (past or present). I would think they'd be just as good though.

02denali · January 21, 2004

ngk iridiums--tr55ix--.these rock

YZRider · January 21, 2004

I'm going to put some Iridiums in when I put the blower on. Not sure whether to use colder or stock heat range though. I seem to recall Magnuson said stock heat range but I will double check first. Does anyone know for sure? Truck is an 03 6.0L 4X4 1500HD

Steve

Durkin · January 22, 2004

Folks:

I think it is one range colder than stock and copper! See the last few pages of the installation instructions that are posted on this site under the tech section at Superchargersonline.

Regards,

Durkin

2ksleeper · January 22, 2004

As for spark plugs, NGK has a good quality plug & the copper ones are so cheep it wouldn't hert to buy them & try them. With spark plugs the rule of thumb is for every 100hp you add you need to run one step colder plug & tighten up the gap but that is just a starting point. I believe you just have to try to run the hottest plug & biggest gap without having any spark knock to get the most power. As far as the plug wires, I have been running magnecore plug wires for about 30k miles with no aluminum heat shields & ASM headers with no problems what so ever.