What spark plugs if replacing????
Thread Starter
Too Much Fun
Joined: Sep 2004
Posts: 1,691
Likes: 205
From: Florence, AL
What spark plugs if replacing????
Hey, I am having long tube headers installed in a week or 2 and I am looking to swap out spark plugs while I'm at it. I may be putting a very mild cam in also during install. See mods in sig below.
So, what plugs have you guys/girls had the best experience/performance with and recommend for an 08 C6 automatic?
Thanks In Advance!!!
So, what plugs have you guys/girls had the best experience/performance with and recommend for an 08 C6 automatic?
Thanks In Advance!!!
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
The TR6 is a colder plug than the TR 55.
If you plan on making a considerable amount more horsepower than stock with good tuning I would go with the TR6. If you are going to stick with a bolton car then the TR55's should be fine.
That's my recommendation.
If you plan on making a considerable amount more horsepower than stock with good tuning I would go with the TR6. If you are going to stick with a bolton car then the TR55's should be fine.
That's my recommendation.
Drifting
Joined: Apr 2006
Posts: 1,276
Likes: 5
From: Ambler Pa.
Hey, I am having long tube headers installed in a week or 2 and I am looking to swap out spark plugs while I'm at it. I may be putting a very mild cam in also during install. See mods in sig below.
So, what plugs have you guys/girls had the best experience/performance with and recommend for an 08 C6 automatic?
Thanks In Advance!!!
So, what plugs have you guys/girls had the best experience/performance with and recommend for an 08 C6 automatic?
Thanks In Advance!!!
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
I've run the Callaways and the stockers in my previous supercharged LS2, I can't say I noticed a nickels worth of difference in performance. However the Callaways appear to be by far, superior in quality.
Spark plugs were NGK TR6's gapped at .035 for 6 lbs. of boost.
Spark plugs were NGK TR6's gapped at .035 for 6 lbs. of boost.
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Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
I went thru this exercise a last year on my 2005 LS2.
NGK TR55 and TR55IX are gapped at .060" gap. The LS2 is spec'd at .040" gap so the correct replacement NGK plug is the TR5.
I emailed NGK and they stated their website incorrectly listed the TR55 for 2005 Corvettes and should be TR5.
NGK TR55 and TR55IX are gapped at .060" gap. The LS2 is spec'd at .040" gap so the correct replacement NGK plug is the TR5.
I emailed NGK and they stated their website incorrectly listed the TR55 for 2005 Corvettes and should be TR5.
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
I went thru this exercise a last year on my 2005 LS2.
NGK TR55 and TR55IX are gapped at .060" gap. The LS2 is spec'd at .040" gap so the correct replacement NGK plug is the TR5.
I emailed NGK and they stated their website incorrectly listed the TR55 for 2005 Corvettes and should be TR5.
NGK TR55 and TR55IX are gapped at .060" gap. The LS2 is spec'd at .040" gap so the correct replacement NGK plug is the TR5.
I emailed NGK and they stated their website incorrectly listed the TR55 for 2005 Corvettes and should be TR5.
Safety Car
Joined: Jun 1999
Posts: 3,570
Likes: 3
From: Austin, Singapore, Kuala Lumpur, Houston, Dallas, Hong Kong, Elgin, etc.. Texas
The TR55 is designed to have a gap of .060" + - .005". It is not the correct plug if you want to gap it at .040" because the ground electrode would have to be bent too far over. The center and ground electrode should be perpendicular as much as possible. This is per the emails I got from the NGK engineers.
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
TR5 series, ie TR5, TR5GP, TR5iX..
I have mods and the guy that tunes my car recommended TR6IX, which is one step colder.
http://www.ngksparkplugs.com/ Select 2006 corvette to get correct info..
I have mods and the guy that tunes my car recommended TR6IX, which is one step colder.
http://www.ngksparkplugs.com/ Select 2006 corvette to get correct info..
Burning Brakes
Joined: Feb 2002
Posts: 1,232
Likes: 10
From: Montrose Colorado
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
THe vette comes with delco iridium plugs. Thats why they are at a 100,000mile replacement interval. I'm changing mine just because of the mods. If not, I would leave them in there until 30,000 miles.