Which Plug is best? Need Advice
Racer
Joined: Aug 2005
Posts: 361
Likes: 1
From: Montara Ca
Originally Posted by ErnieN85
I sure wouldn't change them!
as long as you didn't crack the insulator or any thing like that........ you should be good to go.
as long as you didn't crack the insulator or any thing like that........ you should be good to go.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Originally Posted by Gene Wolf
I just put in the AC Delco 41-985 iridium plugs and there was a noticeable improvement in my performance and it idles much smoother. The original plugs were worn to .070" gap and most other plugs call for a .060" gap, but the 41-985 plugs come with a .040" gap and a warning to not deviate from this setting. I don't know why the smaller gap, but it is a newer plug and it comes right from GM so I figured they know what they are doing.
I bought mine from Pep Boys here in California, but if you can't find it nearby you can by it here:
http://www.autopartsgiant.com/welcom...ds&kwd=NGK.gif
I bought mine from Pep Boys here in California, but if you can't find it nearby you can by it here:
http://www.autopartsgiant.com/welcom...ds&kwd=NGK.gif
These are used in the new Corvettes, put a set in my '97 and agree with all of the above stated.
Melting Slicks
Joined: Mar 2005
Posts: 2,252
Likes: 181
From: NE OH
I just installed the NGK TR6's last night in my boosted car. The car seems to run smoother, either that, or my aching back is telling me the car is running better. I noticed the TR6's were pre-gapped at about .40, while the AC 41-952's that I removed had about a .6 or .7 gap. I think the AC's are iradium or something. The electrode thing-ee looks real small.
