What brand of plugs are you running?

[5spd Z71]

Just regular copper Delco.


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[SCOTTYINWV]

Acdelco or ngk

Brand new Acdelco in the truck at the moment.

 

[OlSmokie]

I tried the Bosch plugs and they were the WORSE plugs I have ever used. Two of them failed. Nothing but ACs in my truck from then on.

 

[great white]

I did the "plug delete" mod....

 

[SCOTTYINWV]

I did the "plug delete" mod....

I wanna do the cummins plug delete mod

 

[Ruger_556]

AC Delco... No problems

 

[95chev]

Ac delco as far as i know they are the original plugs

 

[Trav_69Stang]

I'm surprised only one person said E3's!

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[aaronb]

Ac delco's in the 98, and ngk's in the wifes 04 sierra.Tried bosch plugs and it ran like chit.

 

[95Escahoe]

AC Delco

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