Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Reply
 
 
 
 
Thread Tools Search this Thread
Old 09-25-2013, 11:38 AM   #1
WICKEDFRC
CF Senior Member
 
WICKEDFRC's Avatar
 
Member Since: Apr 2010
Location: Avatar designed by WickedFRC.
Default C5 Spark Plugs and Plug Wires

All,

I am going to "update" what I have in the Vette, but need some advice. The last Plug Wires I am not so sure what I have in there, possibly MSD. The Spark Plugs are for sure, NGK TR55. After speaking with the Service Tech, he came up with two DIFFERENT part numbers for both. Can anyone validate the difference and what are the CORRECT ONES I should go with?

I have an SLP Forged 402, G6X3 Cam, AFR 225 Heads, Upgraded Injectors (Unsure of Lb), B & B BUllets, and No Cats.

This is what I found ONLINE which was recommended for my car thru GMPARTSHOUSE: (Gene Culley's Website)

12495519 $63.42 Plug Wire (Dealer) / $60.88 ONLINE

12621258/ GM AC Delco Iridium Spark Plugs $10.72 (Dealer) / $6.43 ONLINE
-----------------------------------------------------------------
By using my VIN Number, he stated THIS is what I should be using:

19299585 Spark Plug $10.06 (Dealer) / $5.99 ONLINE

88892763 Plug Wires $185.42 (Dealer) / $110.32 ONLINE



I believe he said the difference was the above plugs are Iridium and the bottom plugs are Platinum? But there is a big difference in the spark plugs wires as well.

CAN ANYONE STEER ME CORRECTLY ON THIS?
WICKEDFRC is offline   Reply With Quote
Old 09-25-2013, 03:11 PM   #2
tblu92
CF Senior Member
St. Jude Donor '13
 
tblu92's Avatar
 
Member Since: Aug 2005
Default

I'm not a fan of all the new material plugs----To me yes they add life--buts that's it NO HP---Irrid or Plat plugs say you change them at 100K of driving But I don't know any well respecting motor head that can not remove them sooner
As far as plug wire go Not a fan of MSD wires as in the past the coil boots were too thick and you don't get a good SNAP when they are installed---and they have been known to pop off--------I like the GM Performance Red wires best--- and the plain old NGK copper cored TR55------TR55's should last 30k easily and if you know hoe to read plugs they are simply the best and easiest to read when new
tblu92 is offline   Reply With Quote
Old 09-25-2013, 04:58 PM   #3
Corvette_Ed
CF Senior Member
 
Corvette_Ed's Avatar
 
Member Since: May 2012
Location: One foot in TX and the other in AZ
Default

Get the GMPP wires and the newer Iridium plugs and you'll be very happy with it. Gap for the Iridium is .040; as always check the gap before installing any new spark plug.

Also keep in mind that no plug wire or spark plug will ever add HP no matter what the manufacturer might say. New ones might restore some lost HP but they will never add any.

Last edited by Corvette_Ed; 09-25-2013 at 05:01 PM.
Corvette_Ed is offline   Reply With Quote
Old 09-25-2013, 05:02 PM   #4
Corvette_Ed
CF Senior Member
 
Corvette_Ed's Avatar
 
Member Since: May 2012
Location: One foot in TX and the other in AZ
Default

Quote:
Originally Posted by tblu92 View Post
I'm not a fan of all the new material plugs----To me yes they add life--buts that's it NO HP
No spark plug will add HP.
Corvette_Ed is offline   Reply With Quote
Old 09-25-2013, 05:07 PM   #5
Johnny@MTI
Premium Supporting Vendor
 
Johnny@MTI's Avatar
 
Member Since: May 2013
Default

we use the delcos or ngk.

but as far as wires... you cant beat the MTI wires
Click the image to open in full size.


http://www.mtiracing.com/mti-racing-...lug-wires.html
Johnny@MTI is offline   Reply With Quote
Old 09-25-2013, 06:00 PM   #6
RedZMonte
CF Senior Member
 
Member Since: Dec 2003
Location: Loveland CO
Default

My stock 04Z has Delco Irridium. I replaced with OEM irridium and GMPP 8mm red wires rather then the OEM Z06 7mm red wires. plugs from parts store and wires from dealer.

the plugs will be gapped correctly out of the box. Do not gap Irridium or platinum plugs you will likely damage the irridium/platinum metals on the plug. Copper core plugs are designed to be gapped.

S

Last edited by RedZMonte; 09-25-2013 at 06:02 PM.
RedZMonte is offline   Reply With Quote
Old 09-26-2013, 12:04 AM   #7
WICKEDFRC
CF Senior Member
 
WICKEDFRC's Avatar
 
Member Since: Apr 2010
Location: Avatar designed by WickedFRC.
Default

Quote:
Originally Posted by Johnny@MTI View Post
we use the delcos or ngk.

but as far as wires... you cant beat the MTI wires
Click the image to open in full size.


http://www.mtiracing.com/mti-racing-...lug-wires.html
Those wires look beefy. What are they? 7mm, 8mm, 8.5mm?

Also do you offer this with a set of Spark Plugs? If ordering, I always like to order complete sets from one distributor/vendor.

Thanks for posting.
WICKEDFRC is offline   Reply With Quote
Old 09-26-2013, 10:54 AM   #8
Johnny@MTI
Premium Supporting Vendor
 
Johnny@MTI's Avatar
 
Member Since: May 2013
Default

They are 7mm and the same ones used on Daytona prototype grand-am cars. http://www.mtiracing.com/mti-racing-...lug-wires.html

we don't list plugs on our website, but if you want a set of delcos just shoot me over an email.
Johnny@mtiracing.com
we can get a set from one of our distributors, and send them in the box with the wires.

That will save you on shipping!
Johnny@MTI is offline   Reply With Quote
Old 09-26-2013, 11:49 AM   #9
YellowC5Alive
Junior Member
 
Member Since: Sep 2013
Default

I use stock style wires because the beefy ones kept burning from my headers.
YellowC5Alive is offline   Reply With Quote
Old 09-26-2013, 02:07 PM   #10
Corvette_Ed
CF Senior Member
 
Corvette_Ed's Avatar
 
Member Since: May 2012
Location: One foot in TX and the other in AZ
Default

Quote:
Originally Posted by RedZMonte View Post
the plugs will be gapped correctly out of the box. Do not gap Irridium or platinum plugs you will likely damage the irridium/platinum metals on the plug. Copper core plugs are designed to be gapped.

S
Yes, but you should always verify the gap. Mistakes happen and some have found new Irridium plugs with incorrect gaps.
Corvette_Ed is offline   Reply With Quote
Old 09-26-2013, 02:34 PM   #11
RedZMonte
CF Senior Member
 
Member Since: Dec 2003
Location: Loveland CO
Default

Dont forget thread lube for the plug and Boot grease on the end for easy service next time around.

Not sure about others but the GMPP wires do also retain the stock head shield for the plug wire.
RedZMonte is offline   Reply With Quote
Old 09-26-2013, 03:38 PM   #12
thumpinc5
CF Senior Member
 
thumpinc5's Avatar
 
Member Since: Apr 2013
Default

MSD wires are junk. I had a set develop a miss in less than 1000 miles. After much research, I found many others have had the same problems. Unfortunately, I let someone talk me into the MSDs. I swapped back to Taylors and the miss went away. We run Taylors on everything now and I've never had a problem with a set on anything. A set of Sriro Pros are only $54 shipped for a C5.



Frank
thumpinc5 is offline   Reply With Quote
Old 09-26-2013, 03:42 PM   #13
Johnny@MTI
Premium Supporting Vendor
 
Johnny@MTI's Avatar
 
Member Since: May 2013
Default

Quote:
Originally Posted by YellowC5Alive View Post
I use stock style wires because the beefy ones kept burning from my headers.
that's why we use the 7mm over the 8 or 8.5mm. we have our wires on all of our race cars, and we haven't melted any.

Last edited by Johnny@MTI; 09-26-2013 at 03:48 PM.
Johnny@MTI is offline   Reply With Quote
Old 09-26-2013, 03:42 PM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page C5 Spark Plugs and Plug Wires
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
spark plug change Blanco56 C5 Tech 1 06-25-2014 10:46 PM
Gapping AC-Delco Iridium 41-110 Spark Plugs drseth C5 Tech 1 06-03-2014 06:27 PM
plug wires hougland C5 General 31 02-12-2014 11:54 PM
What spark plugs to buy? fixvet C5 Tech 14 01-19-2014 01:04 PM
NGK Spark Plugs cottoneg C3 Tech/Performance 20 10-10-2012 07:24 PM



Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
 

All times are GMT -4. The time now is 12:17 PM.


Emails & Password Backup