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-   -   What Spark plugs are you guys running? (https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/what-spark-plugs-you-guys-running-398504/)

03chevy5.3rcsb 08-05-2007 06:06 PM

What Spark plugs are you guys running?
 
Time to change plugs. What would be the best for a N/A no N2O price doesn't really matter, and what gap? Thanks in advance.

trever1t 08-05-2007 06:10 PM

OEM's are probsbly fine if you don't spray

usarmyman 08-05-2007 06:12 PM

I just always us AC Delco. Just don't get Boch, man thoes are the worst plugs I have ever had. My truck ran like crap, I put the AC Delco's back in and it ran like a champ ever sience.

nightrunner 08-05-2007 06:13 PM

Ngk Tr55

Red04Silverado 08-05-2007 06:17 PM

NGKs here, love them

Hemi Killer 08-05-2007 07:13 PM

NGK TR6, I was running NGK TR55s. My motor seems to like the TR6s. My old cammed 5.3 liked the TR55s.

mguthr1 08-05-2007 09:24 PM

ngk tr55s

bgray 08-05-2007 10:09 PM

tr55's .060 gap

Black Plague 08-05-2007 10:25 PM

AC/Delco Iridium part 41-985 gaped at .040-.045 ;) Ecspecially if you have headers LOL Its a pain to change a couple of plugs on My OBX headers and I dont want to mess with them for a while!

04Z71 08-06-2007 01:52 AM

I had switched to the ngk tr55s and my truck ran like crap with them. Switched back to the AC/Delco Iridium and it ran great.


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