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Apr 24, 2009 | 04:52 PM

IGOTU

Thread Starter

Heel & Toe

Joined: May 2008

Posts: 24

Likes: 0

spark plugs

what spark plugs should i use?

Apr 24, 2009 | 05:00 PM

FasterIsBetter

Burning Brakes

Joined: Feb 2006

Posts: 1,205

Likes: 5

From: Jupiter FL

I installed NGK Iridium plugs. They are excellent.

Apr 24, 2009 | 09:14 PM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

There the ones!! Dont get bit with high dollar plug hype. NO HP gain with plug swaps!!!

Last edited by Bill Curlee; Apr 24, 2009 at 09:25 PM.

Apr 24, 2009 | 09:23 PM

rmtt

Pro

Joined: Jun 2008

Posts: 516

Likes: 6

From: Spartanburg South Carolina

It depends on what mods you have. Do you have heads, cam?

Apr 24, 2009 | 09:25 PM

ZOH SIX

Instructor

Joined: Nov 2008

Posts: 178

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From: Charleston S.C.

im also interested in this question

Apr 24, 2009 | 09:32 PM

rmtt

Pro

Joined: Jun 2008

Posts: 516

Likes: 6

From: Spartanburg South Carolina

Well mine is a H/C/I car with a CR of about 11.3-1, and I am using the NGK TR-55's. I know some with boost or nitrous will run the TR-6's.

Apr 24, 2009 | 09:33 PM

Bill Curlee

Tech Contributor

Joined: Dec 1999

Posts: 32,910

Likes: 2,402

From: Anthony TX

CI 6,7,8,9,11 Vet

St. Jude Donor '08

if you have heads and cam mods, there are better choices BUT,,,,they do NOT last as long as a OEM irridium plug. Use the irridums if your not heavly modified.

BC

Apr 24, 2009 | 09:36 PM

rmtt

Pro

Joined: Jun 2008

Posts: 516

Likes: 6

From: Spartanburg South Carolina

Quote:

Originally Posted by Bill Curlee

if you have heads and cam mods, there are better choices BUT,,,,they do NOT last as long as a OEM irridium plug. Use the irridums if your not heavly modified.

BC

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Apr 25, 2009 | 09:06 PM

ls1impulse

Burning Brakes

Joined: May 2007

Posts: 841

Likes: 0

From: Gettysburg PA

Quote:

Originally Posted by Bill Curlee

if you have heads and cam mods, there are better choices BUT,,,,they do NOT last as long as a OEM irridium plug. Use the irridums if your not heavly modified.

BC

And if you are?

I'm basically stock now, but i'm looking to get the GMPP wires / plugs when I get the headers/x/VR/PP TB/tune in a month or two, I would imagine at this point stick with the GM iridiums?

After that it's getting an A&A kit.

Apr 26, 2009 | 12:03 AM

#10

skydive120

Racer

Joined: Aug 2007

Posts: 485

Likes: 0

From: Moline Illinois

Had the stock plugs in my car up untill last year when I decided to run nitrous, tried the TR-6's and had nothing but problems when it warmed up. It ran fine cold but as soon as it was at operating temperature it would missfire. Switched to the TR-55's and everything has been fine with the exception of the occasional stumble at idle, which may be partialy due to the cam.

Chris

Apr 26, 2009 | 08:23 AM

#11

silversport

Melting Slicks

Joined: Jun 2001

Posts: 2,565

Likes: 2

From: Chicagoland Illinois

anyone used A/C Delco RapidFire Platinums???...I have a set of these I bought on closeout a while back...coming up time for me to change out my OE Platinums (IIRC mine are Densos as Delco ran out in '01 or it was the plat issue but...)...I don't really buy in to the plugs will get you more HP but I do believe in using the right plugs for the job...the RapidFire Platinums I have are the right number for our LS1s...would love to hear from anyone with experience on this though...
Thanks,
Bill

Apr 28, 2009 | 02:01 PM

#12

RyanR0101

Racer

Joined: Apr 2007

Posts: 330

Likes: 33

From: Milwaukee WI

I use Bosch Platinum +4. One of the Vette mags did a comparo on plugs and these came out on top power wise. Not a huge difference mind you, but they were best.