slowfive0 Posted January 3, 2008 Report Share Posted January 3, 2008 Hey guys, I have an '04 SS Silverado with a Magnacharger, GT2-3 cam, 3.3 pulley (plan to switch to 2.8 shortly) shorty headers and cat back. I'm going to change the plugs and I went down and bought some yesterday. I bought the NGK stock replacement plugs. They have the iridium tips and were like 7 bucks or something a piece. I know you're not supposed to gap these due to the iridium buttons. Question is: 1. Will these plugs work out with my application and can I gap them down or do I need to? 2. Stock heat range ok? This is a daily driver---not a race vehicle--lol! Thanks guys! Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted January 3, 2008 Report Share Posted January 3, 2008 I would go with the cooler TR-6 plugs, but the TR-55 will probably be okay also. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted January 3, 2008 Report Share Posted January 3, 2008 I would go with the cooler TR-6 plugs, but the TR-55 will probably be okay also. run a cooler plug, get teh TR-6 Quote Link to comment Share on other sites More sharing options...
shakesvho Posted January 3, 2008 Report Share Posted January 3, 2008 +3 TR6 Gap to .035 Quote Link to comment Share on other sites More sharing options...
slowfive0 Posted January 3, 2008 Author Report Share Posted January 3, 2008 Sounds like the TR-6 plug is the way to go then--- lol! Are those iridium or standard type plugs? Iridium ok with a s/c'd combo? Thanks again. TR-6 is the full part #???? Quote Link to comment Share on other sites More sharing options...
sprayed99 Posted January 3, 2008 Report Share Posted January 3, 2008 standard Tr-6 plugs just ask for NGK Tr-6 plugs gap them between 32-35. Quote Link to comment Share on other sites More sharing options...
slowfive0 Posted January 3, 2008 Author Report Share Posted January 3, 2008 Cool!!! Confirm a couple of things please. 1. TR-6 is one range colder then TR-55---right? 2. Iridium isn't worth the $$$'s or it may cause issues??? Thanks guys for the help and quick responses. standard Tr-6 plugs just ask for NGK Tr-6 plugs gap them between 32-35. Quote Link to comment Share on other sites More sharing options...
sprayed99 Posted January 3, 2008 Report Share Posted January 3, 2008 one heat range cooler yes. I have never used the iridium so dont waste the $$$. I'm also a magnuson dealer so its not like I have never done this before LOL. Quote Link to comment Share on other sites More sharing options...
slowfive0 Posted January 3, 2008 Author Report Share Posted January 3, 2008 AWESOME!!! You guys just saved me 40 bucks!!! It looks like I owe someone a beer.... one heat range cooler yes. I have never used the iridium so dont waste the $$$. I'm also a magnuson dealer so its not like I have never done this before LOL. Quote Link to comment Share on other sites More sharing options...
shakesvho Posted January 3, 2008 Report Share Posted January 3, 2008 (edited) NGK TR6 Spark Plugs #NGK-4177 @ Summit for $1.99 each Edited January 3, 2008 by shakesvho (see edit history) Quote Link to comment Share on other sites More sharing options...
slowfive0 Posted January 3, 2008 Author Report Share Posted January 3, 2008 Thanks guys! NGK TR6 Spark Plugs #NGK-4177 @ Summit for $1.99 each Quote Link to comment Share on other sites More sharing options...
sprayed99 Posted January 3, 2008 Report Share Posted January 3, 2008 just go to the local parts store everyone carries them Quote Link to comment Share on other sites More sharing options...
slowfive0 Posted January 3, 2008 Author Report Share Posted January 3, 2008 Yep, Murrays 1.99!! Thanks. BTW, an 04 F-250 superduty with 5.4 uses these plugs if someone needs an vehicle application. Thanks again guys! just go to the local parts store everyone carries them Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted January 7, 2008 Report Share Posted January 7, 2008 the stock plugs on my 06' SS came with AC Delco plugs ($5.99) that are pretty much iridium tip since NGK make the plugs for AC Delco i belive Quote Link to comment Share on other sites More sharing options...
oscareltemblo Posted February 22, 2008 Report Share Posted February 22, 2008 Doesn't the truck already have headers? Quote Link to comment Share on other sites More sharing options...
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