C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Plugs and Wires

Thread Tools
 
Search this Thread
 
Old Jun 7, 2007 | 07:06 PM
  #1  
dmoore's Avatar
dmoore
Thread Starter
Le Mans Master
 
Joined: Mar 2007
Posts: 6,007
Likes: 2
From: Manteo NC
Default Plugs and Wires

I have 50,000 on my 2000 Coupe, should I change the plugs and wires? Also I was looking Granatelli spark plug wires and they claim to add to up to 10 horsepower!! Is this true? I was going with NGK plugs unless anyone else has another suggestion?
Reply
Old Jun 7, 2007 | 07:14 PM
  #2  
screw991le's Avatar
screw991le
Race Director
10 Year Member
 
Joined: Sep 2004
Posts: 17,786
Likes: 4
From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Default

Originally Posted by dmoore
I have 50,000 on my 2000 Coupe, should I change the plugs and wires? Also I was looking Granatelli spark plug wires and they claim to add to up to 10 horsepower!! Is this true? I was going with NGK plugs unless anyone else has another suggestion?

Key words in the sentence "UP TO". New Stock vs New Granatelli, you'll see nothing.

NGKs and Regular wires, IMHO. Save your $$$
Reply
Old Jun 7, 2007 | 07:18 PM
  #3  
csexton's Avatar
csexton
Team Owner
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jul 2004
Posts: 30,045
Likes: 4
From: Danville Virginia
Default

Douglas, I wouldn't put much stock in the claims. I recently changed out my wires and plugs and went with the GM performance red wires and Ac Delco Iridium plugs and couldn't be happier. Gene has some good prices over at Gmpartshouse (forum vendor).

Chuck
Reply
Old Jun 7, 2007 | 10:43 PM
  #4  
thetorch's Avatar
thetorch
Burning Brakes
20 Year Member
 
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Default

Originally Posted by dmoore
I have 50,000 on my 2000 Coupe, should I change the plugs and wires? Also I was looking Granatelli spark plug wires and they claim to add to up to 10 horsepower!! Is this true? I was going with NGK plugs unless anyone else has another suggestion?
For spark plugs either the Delco Iridium 41-985 or Denso Iridium IT16 for the stock heat range or IT20 for one heat range colder.

For wires either the Magnecor KV-85's or MSD's.

Reply
Old Jun 8, 2007 | 12:08 PM
  #5  
bighank's Avatar
bighank
Melting Slicks
15 Year Member
 
Joined: Jul 2006
Posts: 2,332
Likes: 31
From: Silver Spring MD
Default Plugsd and wires

I went with Red Performance wires (ACTUALLY CHEAPER THAN THE BLACK OEM ONES) reused the metal cans (radio supression) and used the GM Iridium plugs. Incidentally your existing plugs age gapped at .060 and the Iridium plugs are gapped at .040. DON'T REGAP THEM TO .060. Only real challenge was the rear plug on the drivers side. Needed a swivel 5/8" plug socket (about $4 at Autozone) for this plug. Have FUN. BIGHANK
Reply
Old Jun 8, 2007 | 12:14 PM
  #6  
rws.1's Avatar
rws.1
Race Director
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
Default

Autolite wires at Autozone are only about $30 for the set...
Many on here using them
Reply
Old Jun 10, 2007 | 01:18 AM
  #7  
jeanlucpicard's Avatar
jeanlucpicard
Burning Brakes
10 Year Member
 
Joined: Jan 2002
Posts: 885
Likes: 0
From: The Woodlands Texas
Default

I haven't seen anything come out of Granetteli that was accurate or added power on the vette - they do reduce the weight of your wallet though

Go with a set of OEM plugs and wires from Gene and you'll be happy. Use the money you save and buy a few beers for your Forum buddies - like me for instance
Reply
Old Jun 10, 2007 | 01:39 AM
  #8  
dmoore's Avatar
dmoore
Thread Starter
Le Mans Master
 
Joined: Mar 2007
Posts: 6,007
Likes: 2
From: Manteo NC
Default

Thanks for the advice, I know I can always count on Forum Members!! Chaning plugs, wires, and painting calipers next weekend if anyone wants to watch, have a good laugh, and drink a cold beer or two!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-1

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-2

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-3

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-4

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-5

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-6

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-7

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-8

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-9

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
Old Jun 10, 2007 | 02:01 AM
  #9  
1FASTVERT's Avatar
1FASTVERT
Drifting
Supporting Lifetime
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2007
Posts: 1,891
Likes: 109
From: Texas
St. Jude Donor '12
Default

I am in the process of changing out my plugs and wires and have asked the same question you did. I changed my plugs with the NGK TR55IX Iridiums. I was torn between the GM replacements and the MSD's. I paid $70(shipping included) for the MSD's. They claim to have a 40 ohm loss and are alot less expensive than the Granatelli's. The MSD's are already custom cut so you don't have to. MSD's come in black and red and are 8.5 mm compared to the 8 mm for the GM's. I hope this info helps with your decision. BUY THE IRIDIUMS. Do Not buy Platinums
Reply
Old Jun 10, 2007 | 05:30 AM
  #10  
str8upchevy's Avatar
str8upchevy
Burning Brakes
 
Joined: Dec 2006
Posts: 872
Likes: 3
From: 90% of all Fords are still on the road.....the other 10% actually made it home!
Default

Originally Posted by craig9132
I am in the process of changing out my plugs and wires and have asked the same question you did. I changed my plugs with the NGK TR55IX Iridiums. I was torn between the GM replacements and the MSD's. I paid $70(shipping included) for the MSD's. They claim to have a 40 ohm loss and are alot less expensive than the Granatelli's. The MSD's are already custom cut so you don't have to. MSD's come in black and red and are 8.5 mm compared to the 8 mm for the GM's. I hope this info helps with your decision. BUY THE IRIDIUMS. Do Not buy Platinums
I agree with you about the MSD wires, I went them and couldn't be happier.......but as far as plugs go....Silver Plugs are actually better than the Iridiums. There's no question that the Platinums aren't all that great for this application, but Silver happens to be the best conductor of metal that you can use,....... Nology makes a set for around $65.

Just my .02 worth

Last edited by str8upchevy; Jun 10, 2007 at 05:33 AM.
Reply

Get notified of new replies

To Plugs and Wires





All times are GMT -4. The time now is 04:03 AM.

story-0
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-1
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-2
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-3
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-4
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-5
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-6
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-7
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-8
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-9
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE