[OutlawDrifter]

Originally Posted by 83GMCK2500

The Vortec motors had a platinum plug in them originally, they were supposed to go 100k miles with them. I do not use any of the gimmick plugs with multiple electrodes or double platinum nonsense. Best results I've ever had were with AC Delco platinum plugs, plus they should be pre-gapped to .060". Some places like Rockauto do list a copper plug as an option and a quality copper plug will run well for a while, just not nearly as long as the platinum will.

you're right, the copper won't last the duration of the platinum, but copper is the better conductor of the two. i don't mind changing plugs every 20-30k, or less if needed. all the plugs i pulled out of the box were gapped at .060 except one that needed adjusted, and it was slightly closed.

i still can't get over the fact that coil was still going at 207k.