Best Spark Plugs
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Joined: Feb 2004
Posts: 67
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From: Shalimar FL
Best Spark Plugs
I have a 99 Coupe with black wing intake, Magnaflow exhaust with Xpipe, getting ready to install new headers, thought I would change the plugs while I"m in there. Bought MSD plug wires, any suggestions as to which spark plugs to install? 
Burning Brakes
Joined: Apr 2005
Posts: 753
Likes: 1
From: Oceanside CA
NGK TR55's work fine for me. I have the same MSD wires also. IMO your not gonna get a HP increase from any plugs or wires so go with whats $ensible. You can find a good set up at www.corvettegarage.com. Make sure to get some heat sleaves to keep your wires from melting from your headers. 
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
Originally Posted by eamador11
NGK TR55s are officially the best spark plugs you can get for a C5.
I run the same in my car. When installing headers, it is a good idea to swap out plugs as they can get banged around durring the install. No HP there... 
Dave
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Joined: Jan 2005
Posts: 3,896
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From: Manchester - Political correctness is tyranny with manners.
Originally Posted by SGT. PYLE
NGK TR55's work fine for me. I have the same MSD wires also. IMO your not gonna get a HP increase from any plugs or wires so go with whats $ensible. You can find a good set up at www.corvettegarage.com. Make sure to get some heat sleaves to keep your wires from melting from your headers.
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Joined: Oct 2000
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From: Monticello MN
Originally Posted by 2KFRC5
How much better are the TR55 over the stock Delco iridiums? Also, how often do you need, or should, change the TR55's?
Inquiring minds would like to know.
Inquiring minds would like to know.
I have never seen actual, documented and verified, performance proof (acceleration, dyno, quartermile, etc) that one brand, or type, is better than another, other than the pucks falling off the original Delco platinums. All I've ever seen is opinion and I guess we're all entitled to one. I run the Delco Iridiums, have been more than satisfied and don't have to change them out every year. It works for me. Ed
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Joined: Nov 2000
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From: Arroyo Grande CA
Originally Posted by C5XTASY
Personally, I believe that if a sparkplug is of the proper physical size, of the proper heat range and has proper gapping there will be absolutely no measurable difference in performance Just MHO.. I have never seen actual, documented and verified, performance proof (acceleration, dyno, quartermile, etc) that one brand, or type, is better than another, other than the pucks falling off the original Delco platinums. All I've ever seen is opinion and I guess we're all entitled to one. I run the Delco Iridiums, have been more than satisfied and don't have to change them out every year. It works for me.
Ed
I have never seen actual, documented and verified, performance proof (acceleration, dyno, quartermile, etc) that one brand, or type, is better than another, other than the pucks falling off the original Delco platinums. All I've ever seen is opinion and I guess we're all entitled to one. I run the Delco Iridiums, have been more than satisfied and don't have to change them out every year. It works for me. Ed
The Vette idles great, and runs great. Wondering how much benefit I would get from the TR55's.
Instructor
Joined: Feb 2005
Posts: 226
Likes: 0
From: Bloomington IL
Originally Posted by C5XTASY
Personally, I believe that if a sparkplug is of the proper physical size, of the proper heat range and has proper gapping there will be absolutely no measurable difference in performance Just MHO.. I have never seen actual, documented and verified, performance proof (acceleration, dyno, quartermile, etc) that one brand, or type, is better than another, other than the pucks falling off the original Delco platinums. All I've ever seen is opinion and I guess we're all entitled to one. I run the Delco Iridiums, have been more than satisfied and don't have to change them out every year. It works for me.
Ed
I have never seen actual, documented and verified, performance proof (acceleration, dyno, quartermile, etc) that one brand, or type, is better than another, other than the pucks falling off the original Delco platinums. All I've ever seen is opinion and I guess we're all entitled to one. I run the Delco Iridiums, have been more than satisfied and don't have to change them out every year. It works for me. Ed
