C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Spark Plugs

Thread Tools
 
Search this Thread
 
Old Mar 8, 2010 | 07:33 PM
  #1  
HONDOBUCK's Avatar
HONDOBUCK
Thread Starter
Advanced
 
Joined: Feb 2010
Posts: 78
Likes: 1
From: Kettle River Minnesota
Default Spark Plugs

What is a good set of spark plugs to use, Its for an 86. I am looking for a better plug then stock, and maybe even wires? does someone have advice? thanks
Reply
Old Mar 8, 2010 | 07:40 PM
  #2  
TA's Avatar
TA
Team Owner
25 Year Member
Top Answer: 1
Top Answer: 3
Top Answer: 5
 
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Default

AC Delco Rapidfires
Reply
Old Mar 8, 2010 | 07:53 PM
  #3  
86IndyCarVette's Avatar
86IndyCarVette
Advanced
 
Joined: Jul 2009
Posts: 81
Likes: 0
From: Lafayette IN
Default

Originally Posted by TA
AC Delco Rapidfires
Reply
Old Mar 8, 2010 | 07:55 PM
  #4  
HONDOBUCK's Avatar
HONDOBUCK
Thread Starter
Advanced
 
Joined: Feb 2010
Posts: 78
Likes: 1
From: Kettle River Minnesota
Default

OK THANKS! What is a price for an AC Delco rapid fire plug?
And what are good wires to use? Thanks
Reply
Old Mar 8, 2010 | 08:12 PM
  #5  
2REDGMC's Avatar
2REDGMC
Intermediate
 
Joined: Jan 2010
Posts: 37
Likes: 0
From: Kingwood TX
Default

Street Thunder just tested 12 plugs in a small block chevy and the NGK G-power made the most HP and TQ About 2.5 HP and TQ better than the rappid fire

Only onle plug tested better and it's some Bosch mystery spark plug that is a surface gap plug that you won't find in the stores.

Also the retail on the NGK is 3.15 per plug

I have NGK plusg in my blown 541, LSX 440, 2 sportbikes, Supercharged Road King and my Volvo I drive everyday. Always thought they were good but did not know that they beat out 11 others

Will pick up a set for a vette next time I'm in the auto parts
Reply
Old Mar 8, 2010 | 08:12 PM
  #6  
2REDGMC's Avatar
2REDGMC
Intermediate
 
Joined: Jan 2010
Posts: 37
Likes: 0
From: Kingwood TX
Default

Originally Posted by HONDOBUCK
OK THANKS! What is a price for an AC Delco rapid fire plug?
And what are good wires to use? Thanks

MSD wires

The only wire I use
Reply
Old Mar 8, 2010 | 11:53 PM
  #7  
dogfish246's Avatar
dogfish246
Safety Car
10 Year Member
 
Joined: Dec 2008
Posts: 3,588
Likes: 10
From: North New Jersey
Default

Originally Posted by 2REDGMC
Street Thunder just tested 12 plugs in a small block chevy and the NGK G-power made the most HP and TQ About 2.5 HP and TQ better than the rappid fire

Only onle plug tested better and it's some Bosch mystery spark plug that is a surface gap plug that you won't find in the stores.

Also the retail on the NGK is 3.15 per plug

I have NGK plusg in my blown 541, LSX 440, 2 sportbikes, Supercharged Road King and my Volvo I drive everyday. Always thought they were good but did not know that they beat out 11 others

Will pick up a set for a vette next time I'm in the auto parts
Do you have a link or something to the info? I wanna read up

Thanks
Reply
Old Mar 9, 2010 | 08:26 AM
  #8  
2REDGMC's Avatar
2REDGMC
Intermediate
 
Joined: Jan 2010
Posts: 37
Likes: 0
From: Kingwood TX
Default

Originally Posted by dogfish246
Do you have a link or something to the info? I wanna read up

Thanks
http://www.streetmachineclub.com/Pro...aspx?id=147482

if that link is not good it's this months March/April of Street Thunder.

www.streetmachineclub.com

And they used a LT1 for all the dyno pulls
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

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

 Michael S. Palmer
story-1

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

 Joe Kucinski
story-2

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

 Joe Kucinski
story-3

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

 Verdad Gallardo
story-4

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

 Joe Kucinski
story-5

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

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

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

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old Mar 9, 2010 | 10:45 AM
  #9  
dogfish246's Avatar
dogfish246
Safety Car
10 Year Member
 
Joined: Dec 2008
Posts: 3,588
Likes: 10
From: North New Jersey
Default

Originally Posted by 2REDGMC
http://www.streetmachineclub.com/Pro...aspx?id=147482

if that link is not good it's this months March/April of Street Thunder.

www.streetmachineclub.com

And they used a LT1 for all the dyno pulls
Perfect Thanks!!!
Reply
Old Mar 9, 2010 | 04:42 PM
  #10  
2REDGMC's Avatar
2REDGMC
Intermediate
 
Joined: Jan 2010
Posts: 37
Likes: 0
From: Kingwood TX
Default

Originally Posted by dogfish246
Perfect Thanks!!!
So what do you think
Reply
Old Mar 9, 2010 | 05:19 PM
  #11  
dogfish246's Avatar
dogfish246
Safety Car
10 Year Member
 
Joined: Dec 2008
Posts: 3,588
Likes: 10
From: North New Jersey
Default

Originally Posted by 2REDGMC
So what do you think
I want some of those mystery spark plugs!!!
The tests seem pretty good, but there was no control test! I think the results had a decent standard deviation so they should be reproducible results... Not too much of a difference between spark plugs, but those mystery bosch spark plugs are really cool/different!!!

I like the info they gave about the melting pt of Platinum vs Iridium and that would make sense that Iridium plugs should last longer do to the higher melting point since only the tip is coated...

I guess if in a few years I cant find those Bosch "top secret" plugs then I will go with the NKG G-power...

Does anyone know anything about the Bosch "mystery"/"top secret" plugs???
Reply
Old Mar 9, 2010 | 06:17 PM
  #12  
skybolt31's Avatar
skybolt31
Drifting
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Dec 2003
Posts: 1,492
Likes: 94
From: Westfield MA
Default

Since you have an '86 you need to make sure you get the right plugs for your heads, aluminum or iron, there is a big difference. Don't go by what you take out.
Reply
Old Mar 9, 2010 | 07:47 PM
  #13  
HONDOBUCK's Avatar
HONDOBUCK
Thread Starter
Advanced
 
Joined: Feb 2010
Posts: 78
Likes: 1
From: Kettle River Minnesota
Default

Originally Posted by skybolt31
Since you have an '86 you need to make sure you get the right plugs for your heads, aluminum or iron, there is a big difference. Don't go by what you take out.
What is the big difference between the plugs for either aluminum or cast iron?
Reply
Old Mar 9, 2010 | 08:28 PM
  #14  
samsonb's Avatar
samsonb
Safety Car
15 Year Member
 
Joined: Jan 2004
Posts: 3,759
Likes: 8
Default

Originally Posted by HONDOBUCK
What is the big difference between the plugs for either aluminum or cast iron?
The plugs are different.
Reply
Old Mar 9, 2010 | 08:48 PM
  #15  
2REDGMC's Avatar
2REDGMC
Intermediate
 
Joined: Jan 2010
Posts: 37
Likes: 0
From: Kingwood TX
Default

Originally Posted by dogfish246
I want some of those mystery spark plugs!!!
The tests seem pretty good, but there was no control test! I think the results had a decent standard deviation so they should be reproducible results... Not too much of a difference between spark plugs, but those mystery bosch spark plugs are really cool/different!!!

I like the info they gave about the melting pt of Platinum vs Iridium and that would make sense that Iridium plugs should last longer do to the higher melting point since only the tip is coated...

I guess if in a few years I cant find those Bosch "top secret" plugs then I will go with the NKG G-power...

Does anyone know anything about the Bosch "mystery"/"top secret" plugs???
I have run the NGK plug that is like the Bosch plug. But that was in a Prostock motorcyle engine. Suzuki 4 cylinder. We run the NGK G power plug in the prostock V twin now. I'm going to do some checking this weekend in Gainesville. If I find some I will let you know. Also need to check my contact list for someone that works for Bosch. 99% sure I have one just never used it.
Reply
Old Mar 10, 2010 | 09:18 PM
  #16  
cshuman's Avatar
cshuman
Pro
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
Default

These aren't Bosch, but they look very similar to the mystery plug.

http://www.briskusa.com/index.htm
Reply

Get notified of new replies

To Spark Plugs





All times are GMT -4. The time now is 12:51 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE