C6 Spark Plug Question
Drifting
Joined: Apr 2007
Posts: 1,619
Likes: 4
From: Houston TX
So far this forum has given me info for the type of plugs and wires that I need. To make sure engine is cold. Make sure the plugs are gapped to 0.040.
Tools I need are a spark plug wire removal tool and a socket wrench made specifically for spark plugs.
Tools I need are a spark plug wire removal tool and a socket wrench made specifically for spark plugs.
Le Mans Master
Joined: Sep 2007
Posts: 8,285
Likes: 14
From: Iowa
There are also interference issues to consider. Some here have said that stock replacement of plugs and wires is the way to go to avoid issues.
To the guy who said he'd wait to 200k miles, I say you likely won't own it til then and if you do you will wish you'd have threaded them out way before then.
To the guy who said he'd wait to 200k miles, I say you likely won't own it til then and if you do you will wish you'd have threaded them out way before then.
CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
Check the plugs to see what condition they're in. Chances are they'll be fine. I used the same NGK TR55 plugs (gapped at 45) for 4+ years in my modified LS2 engine. Despite the high loads I subject the engine to and a previous buildup of oil residue accumulating in the throttle body (before I installed an oil catch-can system) the plugs looked fine. I replaced them for good measure but I really didn't have to. Individual use may vary but the spark plugs in today's cars last a long time.
I've used the NGK TR55 spark plugs for years. What's "misfiring?" 
Burning Brakes
Joined: Oct 2004
Posts: 914
Likes: 0
From: Dallas Georgia
Plugs
Just turned 17K...on the 07' Coupe...the miles were not of concern, worried about the length of time..So, came across a good buy on a new set of Bosch Platum 4's..changed out myself at a cost of around 50 bucks..could not believe how much smoother the engine ran and with gobs of more power...gas milieage improved also..
LKicklight
LKicklight
Racer
Joined: Nov 2006
Posts: 389
Likes: 3
From: Austin TX
This guy has good prices on plug wires and plugs and offers a lot of different options, I'm getting ready to order a set, i have a slight miss and stumble in the mornings I've been trying to iron out. And for $116 for custom made MSD wires and AC Delco plugs, I think its a good deal
MSD 8.5mm Superconductor wires and NGK spark plugs. One of the best combinations on any LS vehicle.
MSD's 8.5mm Super Conductor wire sets have a special helically wound core that has just 40-50 ohms of resistance per foot--but with an RFI suppression equal to a 1,500 ohm wire. In fact, each foot of finished wire features 40 feet of tightly wound copper for superior conductivity. A tough 8.5mm synthetic/silicone jacket over an extra-heavy glass braid and dielectric insulator keeps the current guided to the plugs. Underneath the high-temperature boots, dual crimp stainless steel terminals feature snap-locks to ensure a secure fit.
These are handcrafted by CC Performance Parts and guaranteed for life vs defects. 100% MSD Superconductor wire and components.
MSD Superconductor wire comes in Red or Black and you have your choice of heat range on the NGK spark plugs from a TR55 to a heat range of 10. BR7EF being a popular plug for FI cars. We offer iridium as well as the AC Delco 41-110 for a great package deal as well
Wires are assembled using die-electric grease, one less step for you when changing your plugs and wires. Custom boot ( hi heat or angle) options and lengths available please contact me for details.
Other plug wires fail where the MSD excels. The multi-angle option allows you to manipulate the boot in any direction to any angle to keep the wire and boot away from the exhaust manifold.
This is almost essential with long tube headers installed.
This is where Taylors and most other single crimp wires fail. They can not be manipulated and often break when you try to.
We are approaching the 10,000 wire mark with thousands of satisfied customer all over the world.
http://www.mcssl.com/store/cc-perfor...81a6a08596362b
MSD's 8.5mm Super Conductor wire sets have a special helically wound core that has just 40-50 ohms of resistance per foot--but with an RFI suppression equal to a 1,500 ohm wire. In fact, each foot of finished wire features 40 feet of tightly wound copper for superior conductivity. A tough 8.5mm synthetic/silicone jacket over an extra-heavy glass braid and dielectric insulator keeps the current guided to the plugs. Underneath the high-temperature boots, dual crimp stainless steel terminals feature snap-locks to ensure a secure fit.
These are handcrafted by CC Performance Parts and guaranteed for life vs defects. 100% MSD Superconductor wire and components.
MSD Superconductor wire comes in Red or Black and you have your choice of heat range on the NGK spark plugs from a TR55 to a heat range of 10. BR7EF being a popular plug for FI cars. We offer iridium as well as the AC Delco 41-110 for a great package deal as well
Wires are assembled using die-electric grease, one less step for you when changing your plugs and wires. Custom boot ( hi heat or angle) options and lengths available please contact me for details.
Other plug wires fail where the MSD excels. The multi-angle option allows you to manipulate the boot in any direction to any angle to keep the wire and boot away from the exhaust manifold.
This is almost essential with long tube headers installed.
This is where Taylors and most other single crimp wires fail. They can not be manipulated and often break when you try to.
We are approaching the 10,000 wire mark with thousands of satisfied customer all over the world.
http://www.mcssl.com/store/cc-perfor...81a6a08596362b
Drifting
Joined: Apr 2007
Posts: 1,619
Likes: 4
From: Houston TX
I just changed mine at 65000 miles. The engine had a slight miss that would come and go every now and then and was slowly getting worse, The old plugs looked fine, After the new AC 41-110 Iridium plugs were in, the miss was still there. So I checked the spark plug wires the old fashioned way, At night in complete darkness with the engine running at idle, it looked like a lightning show at the spark plug boots (Stock original GM wires) 7 out of 8 wires were arching to the exhaust manifold, some so badly you could here the arc !! After doing some research on plug wires, (you might be surprised at what it takes to make a high quality plug wire, most parts store wires are marginal at best !!) I installed a set of Magnecor KV8.5 compition wires. (About $125.00 a set, Expensive,Yes, but very high quality and long lasting performance !!). No more Arcing, No more Missing and a smoother running engine !! 
Drifting
Joined: Apr 2007
Posts: 1,619
Likes: 4
From: Houston TX
Ok so here's what I may buy for my 2005 C6:
http://shop.advanceautoparts.com/web...i_sku=15650470
-AND-
http://www.corvettegarage.com/produc...-corvette.html
Plus a COOL ENGINE, wire removal, plug removal, plug gap tool (0.040 in.), dielectric grease and +/- ANTI-SEIZE.
I'll be good to go right?
http://shop.advanceautoparts.com/web...i_sku=15650470
-AND-
http://www.corvettegarage.com/produc...-corvette.html
Plus a COOL ENGINE, wire removal, plug removal, plug gap tool (0.040 in.), dielectric grease and +/- ANTI-SEIZE.
I'll be good to go right?
Racer
Joined: Nov 2006
Posts: 389
Likes: 3
From: Austin TX
Yeah that looks like a good setup or you could save yourself $60 and go with MSD 8.5mm wires.
http://www.mcssl.com/store/cc-perfor...81a6a08596362b
http://www.mcssl.com/store/cc-perfor...81a6a08596362b
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,954
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
I changed them in the garage in less than 30 minutes. I work for beer! Your place or mine?
1 tube dielectric grease
1 tube anti-seize
1 sparkplug socket
1 3 " extension
1 rachet handle
1 6 pack (makes it take longer because you need to pause to drink).
30 minutes of your time.
Oh, and to save money on the wires, the stockers are just fine to use as replacements.
Elmer
1 tube dielectric grease
1 tube anti-seize
1 sparkplug socket
1 3 " extension
1 rachet handle
1 6 pack (makes it take longer because you need to pause to drink).
30 minutes of your time.
Oh, and to save money on the wires, the stockers are just fine to use as replacements.
Elmer
Last edited by eboggs_jkvl; Dec 28, 2010 at 11:48 AM.
Drifting
Joined: Apr 2007
Posts: 1,619
Likes: 4
From: Houston TX
Awesome! Now I just have to get my car back so I can go on this endeavour! Also... Does the engine bay have to be extremely clean to prevent debris from falling into the combustion chamber? Or am I thinking too hard about this...
Racer
Joined: Nov 2006
Posts: 389
Likes: 3
From: Austin TX
Thinking way to hard on this... don't pour sand in the hole or chunk screws in there and you'll be fine
, if a little dirt or grit gets in, it's only going to get burned up and spit out when you fire those new plugs up anyways.
, if a little dirt or grit gets in, it's only going to get burned up and spit out when you fire those new plugs up anyways.
Drifting
Joined: Jun 2008
Posts: 1,746
Likes: 35
From: Jupiter Fl
Yes, it is an LS2 
JMHO Magnecore will be a longer lasting wire than MSD. Stock wires are made to be as inexpensive as possible and are considered a service replacement part with little thought given to performance. When new, there will be very little difference in performance (If any) between any decent wire brand. So then the question becomes which wire will maintain its performance quality (The ability to properly fire the plug) the longest ? I believe thats where Magnecor becomes the best investment.
JMHO Magnecore will be a longer lasting wire than MSD. Stock wires are made to be as inexpensive as possible and are considered a service replacement part with little thought given to performance. When new, there will be very little difference in performance (If any) between any decent wire brand. So then the question becomes which wire will maintain its performance quality (The ability to properly fire the plug) the longest ? I believe thats where Magnecor becomes the best investment.
Last edited by Rogers 07; Dec 28, 2010 at 08:50 PM.
Race Director
Joined: Dec 2007
Posts: 19,574
Likes: 167
From: Frederick, MD
I just changed mine at 65000 miles. The engine had a slight miss that would come and go every now and then and was slowly getting worse, The old plugs looked fine, After the new AC 41-110 Iridium plugs were in, the miss was still there. So I checked the spark plug wires the old fashioned way, At night in complete darkness with the engine running at idle, it looked like a lightning show at the spark plug boots (Stock original GM wires) 7 out of 8 wires were arching to the exhaust manifold, some so badly you could here the arc !! After doing some research on plug wires, (you might be surprised at what it takes to make a high quality plug wire, most parts store wires are marginal at best !!) I installed a set of Magnecor KV8.5 compition wires. (About $125.00 a set, Expensive,Yes, but very high quality and long lasting performance !!). No more Arcing, No more Missing and a smoother running engine !!
Burning Brakes
Joined: May 2006
Posts: 786
Likes: 58
From: New Paltz NY
I just changed mine at 65000 miles. The engine had a slight miss that would come and go every now and then and was slowly getting worse, The old plugs looked fine, After the new AC 41-110 Iridium plugs were in, the miss was still there. So I checked the spark plug wires the old fashioned way, At night in complete darkness with the engine running at idle, it looked like a lightning show at the spark plug boots (Stock original GM wires) 7 out of 8 wires were arching to the exhaust manifold, some so badly you could here the arc !! After doing some research on plug wires, (you might be surprised at what it takes to make a high quality plug wire, most parts store wires are marginal at best !!) I installed a set of Magnecor KV8.5 compition wires. (About $125.00 a set, Expensive,Yes, but very high quality and long lasting performance !!). No more Arcing, No more Missing and a smoother running engine !!
LOVE THIS
I once bought Magnacore wires for my Porsche 944 and the wires' boots were awfuly cheap, and in no way equal to the OEM wires' boots. I returned the set and installed a used set of Porsche ignition wires. Ignition wires (and their boots) are one of the most important replaceable parts in your engine.
I cant wait to check my Vette's wires in the dark...
Team Owner
Joined: Apr 2008
Posts: 31,785
Likes: 2,395
From: Middle TN by way of KY, OH, VA, IL, CA, FL, NY, SC, HI
I just changed the original plugs in my 2002 Explorer at 111.6K miles, and was sweating it due to some horror stories (aluminum head threads tearing out, etc.). Some of these Fords have even had a problem with 'spitting out' plugs necessitating head removals.
Anyway, it was no-brainer easy for sure and the original platinum plugs looked great and were still within the gap spec. Just a one-beer job.
I understand why some people just leave them in forever now, but I think that 100K miles is plenty often enough unless you've got a problem.
Anyway, it was no-brainer easy for sure and the original platinum plugs looked great and were still within the gap spec. Just a one-beer job.
I understand why some people just leave them in forever now, but I think that 100K miles is plenty often enough unless you've got a problem.
Pro
Joined: May 2007
Posts: 527
Likes: 1
From: Torrance CA
Truly shocked at the prices dealers are asking for spark plug changes...i mean, 500 dollars, really? 
Just for another example of a dealer trying to rake in money, my wife was quoted 400+ dollars for a spark plug change on her is350. I bought the plugs from a local toyota dealer for 5 bucks cheaper per plug than the lexus dealer and changed em in about an hour Sunday morning. Total cost to her, 120 for the 6 plugs and 10 bucks for my lunch.
The c6 looks even easier, so have at it and enjoy the saved money.
Just for another example of a dealer trying to rake in money, my wife was quoted 400+ dollars for a spark plug change on her is350. I bought the plugs from a local toyota dealer for 5 bucks cheaper per plug than the lexus dealer and changed em in about an hour Sunday morning. Total cost to her, 120 for the 6 plugs and 10 bucks for my lunch.
The c6 looks even easier, so have at it and enjoy the saved money.