best aftermarket spark plugs for ls1?
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Registered User
Joined: May 2003
Posts: 330
From: portland, OR
best aftermarket spark plugs for ls1?
in your experience, what are the best replacement spark plugs for the LS1? if mods make a difference, click the link below to see my entire list of mods. i know that replacing them myself will be quite a project itself, i'll tackle that when it comes time. got 61K miles on her, probably almost due for some new sparks... thanks, i've learned more about my LS1 from this site than anywhere else...
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Joined: Dec 1999
Posts: 357
From: Reynoldsburg, Ohio
I recommend NGK TR55s for regular use, or NGK TR6 for forced induction or nitrous.
However, I've been running Autolite 104s for my supercharger application and have had nothing but good to say about them. The NA Autolite plugs are 106s
However, I've been running Autolite 104s for my supercharger application and have had nothing but good to say about them. The NA Autolite plugs are 106s
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Joined: Oct 1999
Posts: 88
From: San Antonio, TX
My car has Densos in it from the factory. I pulled someof them at 40K and they still looked good and i'm still getting great gas milaege so I'm gonna change them when i hit 50K miles and put the same in. They have a GM part number on them also, 1256377. About $4 each at gmpartsdirect.com
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Joined: Apr 2003
Posts: 132
From: Kansas City, MO
I bought some NGK Iridium's with Taylor Spiro pro 409's. I heard that you don't have to change iridiums as much as the coppers. And it's also rumored that that platnium plugs lose their platium coating rather quickly. Planning on putting them in this week. Interesting thing about the plugs is that the spark rod or whatever it's called looks like the tip of a needle, kinda interesting. Looks like you'd get a good spark off them.
Thread Starter
Registered User
Joined: May 2003
Posts: 330
From: portland, OR
Originally posted by KungFu
I bought some NGK Iridium's with Taylor Spiro pro 409's. I heard that you don't have to change iridiums as much as the coppers. And it's also rumored that that platnium plugs lose their platium coating rather quickly. Planning on putting them in this week. Interesting thing about the plugs is that the spark rod or whatever it's called looks like the tip of a needle, kinda interesting. Looks like you'd get a good spark off them.
I bought some NGK Iridium's with Taylor Spiro pro 409's. I heard that you don't have to change iridiums as much as the coppers. And it's also rumored that that platnium plugs lose their platium coating rather quickly. Planning on putting them in this week. Interesting thing about the plugs is that the spark rod or whatever it's called looks like the tip of a needle, kinda interesting. Looks like you'd get a good spark off them.
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Darth_tsunami
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Sep 18, 2015 01:57 AM