mmscott12

I purchased my '05 Z51 in May. I just purchased a set of MagnaFlow 'shorty' headers (for all of you that will say I should have gone with Long Tubes, the car came with a MagnaFlow cat back system & I didn't want to change any of the components) and an Airaid intake.

My question would be since I am right there anyway, I am going to change the plugs and wires (I have no idea if or when they were ever changed previously & the car has 56K miles), and would like opinions on make/manufacture of brands, options, etc...

Thanks in advance for the input!

alanshore

I've heard nothing but good things out the TR5's from NGK. Love to hear about what other people are getting, I'm still same plugs from factory at 18k miles on my 2008 coup

Here's the info from the website for mine

V-Power TR5
2238
.040

mmscott12

Thanks

tblu92

I agree NGK TR5's come pre-gapped at .040 or you can buy a TR55 that comes pre-gapped at .060 and close them to .040----GM originally recommended a .060 gap on the C5 and C6 but now recommend a .040
As far as wires go I like the GM performance wires (red) the best--- These wire are so short that OHM loss is not an issue anymore but boot fitment on the coil and heat resistance on the plug end is more important--

dentalfloss

When you say, red GM performance wires, I am interested in them. What is the pn # I would order over the GM counter?

schizcat

Every tuner I have talked to or heard from (including those on the forum) say to go with Z06 plugs and wires. The iridium plugs keep cooler than the NGKs. There are many, many threads on here (check tech section) that talk about this same topic.

schizcat

...

rpmextra

Yes I used a tr6ix "iridium" plug, they are brand new I will taken them out as my tuner suggested a colder plug and now will install a tr7ix. if you lived near Ottawa Canada I'd gladly give them to you. they may have 300km on them and they are 12$ plug my cost.

tr5ix (iridium) NGK # 7397
tr6ix (iridium) NGK # 3689 (i'd suggest these)

here is the part number for the wires 12495519
you could even order at the local dealer

tennblkc6

jegs have these in stock for $59.99 with free s&h.

xBoostx

I have tried many different brands including must popular ones, non come close to the quality of Magnecor kv85 they also outlast all the ones i tried.