Ok before I get my tune I need to put new plugs in. Whts the best for these cars?? It has 3.4 rockers, headers ported lim and blower and cai. I am a fan of Ngk s but seen most of ya like auto light. Whts would be best?
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03-09-2012
Ok before I get my tune I need to put new plugs in. Whts the best for these cars?? It has 3.4 rockers, headers ported lim and blower and cai. I am a fan of Ngk s but seen most of ya like auto light. Whts would be best?
03-09-2012
Hottest plug you can run.
03-10-2012
I thought the colder the better
03-10-2012
Nope, The hotter the better.
But how hot you can run is gunna be up to the car and how it likes it.
03-10-2012
people usually run autolite 104's for this setup right?
03-10-2012
As cheap as they are buy 2 sets. 104/605s and run wide open and scan for kr. Then keep whatever set runs best
03-10-2012
Ok so wouldnt I wanna get platinum or iridium 104s so it would be hotter and last longer??
03-10-2012
Copper.
03-10-2012
So 104s and then get it tuned sound ok??
03-10-2012
soudns good to me...do you have a scangauge or any way to scan for KR?
03-10-2012
nvm
03-10-2012
Yep! It is running way to rich to show kr
03-11-2012
Take a read through this...
4) Spark Plugs - Change out those stock spark plugs with new ones to restore any lost power. Brands that most tend to go with are either Copper Core Autolites or NGK Spark Plugs. Get these at your local auto parts store also. They range as follows in order from hottest to coldest plugs...remember...you want the hottest spark possible...so running a super cold plug on a larger pulley to combat knock isn't the best plan...ACD's, AL606's, and AL605's are basically for stock cars or very small bolt ons still running the stock S/C Pulley or modded N/A guys...you want to keep a hot spark. NGKTR55/AL104's for your 3.4" Setup, TR6's are a tad cooler...best used around the 3.25" pulley area, and AL103's...are for the extreme supercharged application...3.0" pulley or lower. Here is a picture to reference the firing order and the correct coil number if yours aren't numbered or you just need a quick reference picture: http://i33.photobucket.com/albums/d6.../plugwires.jpg
AC Delco Factory Replacements: Stock
Autolite 606: Stock
Autolite 605: 1 Heat Range Cooler
NGK TR55: 1 Heat Range Cooler
Autolite 104: 2 Heat Ranges Cooler
NGK TR6: 2 Heat Ranges Cooler
Autolite 103: 3 Heat Rangles Cooler
03-11-2012
Does this mean the 606 is the hottest ?? My car has xp 104 s in it right now. Maybe I'm not getting it but I have been told hotter the better but then this says 606 stock 605 are a heat range colder and so on.
03-11-2012
I think you want cooler for higher mod levels. I'm still learning too
03-12-2012
Yes.^^
Not that hard to figure out IMO.
As well, a decent 3.4" setup will love copper 104's.
Autolite's.
Cheap, like a buck or so a plug.
Buy them, new lifetime warranty plug wires for like 30 bones...toss them on. Gap the plugs @ .050" and enjoy.
Been there, done that.
03-12-2012
Ok can anyone tell me the difference between the iridium and the copper. Cause the car has xp 104s and the look good and I would rather not change Em if there about the same performance
03-12-2012
XP104s are great plugs. Leave 'em in.
Copper plugs start misfiring in as little as 16,000 miles because they're not designed for the tougher conditions of our wasted spark ignition engines.
104's are 104's, as far as performance is concerned. Iridium just means you won't have to change the plugs for 100,000 miles.
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