E3 spark plugs w/ DiamondFIRE tech?

[speeduphoria]

Theres nothing wrong with these plugs
NGK Racing Spark Plugs

[Reaper1]

^^Hey wow...a non-projector plug!! There's a novel idea

[matty]

Put these in my old 78 chvey pick- up with a 350ci. Noticed a difference in power, but not much in fuel economy. Still gets between 8-10 miles to the gallon. I run the truck alot in the sand and the plugs seem to have made a small but noticeable difference. I kept the old plugs because they were still in good shape.


I was told when i bought these that there had been problems with pistons hitting the plugs ............They were fine in my 350 small block