Spark plugs, re-use two options or buy new?

Wrapping up the engine swap project and am down to spark plugs. The engine that came out had the NGK's with about 6k on them. The new (used) engine had the E3 plugs with unknown mileage but look very recent.

Not trying to be a tightwad but am not one to be wasteful either.

Should I re-use NGK's or E3's?

or

Replace with brand new?

Thanks!

 

If you're super charged, you should use the plugs recommended for s/c trucks. They are one or two steps cooler I believe. Personally, I'd install the dual electrode, as they are what's spec for the 3.4l, and you know their condition.

 

I "un" supercharged the truck so not an issue there. The NGK's that were in it were for a factory set up as I dont believe the tech knew any different that worked on it.

 

uh..... where did the s/c go? just asking for a "friend"...

For sure stick to the dual electrode plugs then.

 

Supercharger is sitting on the bench along with the URD 7th injector setup. Will be selling at some point. So re-use the NGK's or buy new?

 

You should use the NGK's, not the E3's. The NGKs look brand new. Put em in and send it.