NGK Spark Plugs..

[Salvatore]

[ QUOTE ]
[ QUOTE ]
NGK's!!!! Endorsed by the Hillbilly Racing Team!!!! Even makes my old boat hum!

[/ QUOTE ]

Spot on! I just ordered up a spare set of NGK's to swap out - mine is starting to stumble a bit because I've been idling around town with the track fat jets in it. I'm suspecting they are a bit fouled, we'll see!

[/ QUOTE ]I only run the old AC plugs. Maybe the new ones are junk. I tried the NGK's and had good results but they did seem to foul a little around town over the older AC's. I am a little rich in the primaries too. I also had good luck with the Autolite 85 or 86's.

[Chevy454]

For those interested, below is a link to a post I made a couple years to help with the questions I was getting about *which* NGK plugs for which heads...

click here

[YENKO DEUCE REGISTRY]

I'm running XR5's, love 'em.

[Chevy454]

Spark plug test article from Andy...

https://www.yenko.net/attachments/spa...lug%20test.pdf

[RPOLS3]

Suprisingly old AC Delco is right there.

[Survivor 69/Z28]

Called NGK yesterday to find out what to run in my stock 70 LS5. He said the replacement for the R43T is a NGK 2405.

Not sure if I really got the warm and fuzzy from this guy....But that is what he told me.

[markjohnson]

I just may have to give a set of NGK's a shot in the ol' LS-6 of mine and see how they compare to my usual plugs.