? on LNF spark plugs.
 

I've just hit 36K in the SS and would like to know what the part# is for our spark plugs as I'm thinking of changing them. Also if I replace the plugs, should I look at replacing the spark plug boots or is that necessary? I haven't torn into the engine itself so any info from those of you that have already done this would be appreciated.

Later
Allex

EDIT: Nevermind, I found the answers to my questions via search on here. :twothumbs: Anyone have a quick How-To for a plug change?

Pop off the coil packs and unscrew the spark plugs. Don't do it when the engine is hot and don't use anti-seize. Torque to 15ft.lbs., I think, you might want to double check that.

I thought I heard these plugs were Iridium rated for 100,000, changing them at 50,000 would be a little anal, which is what they call the way I take care of the car. Thats what I heard,that are the facts ? any smart guys out there, at 35,000 should do trifecta instead of plugs ?

Yeah I dont plan on changing mine for a long time. You can pull them to check for wear and fouling, but they last a lot longer these days.

just changed mine out....
 

Went with NGK #4306 @71,000 and the stockers were fine. If u do change out, getting that airbox off is a bit tricky, there is a thread on that, don't have the link handy, but can help u if u decide to change them.....

im about to hit 40K on mine and im on my 3rd set of plugs. The stock ones took a **** at like 28K then i put some NGK one step colder ones in and the car ate them in 6K so i went back to stock. It was knocking pretty bad on the step colder plugs

I would say change them about 75k anything before that is just a waste unless you have a plug fail. I have changed AC Delco plugs at 100k and they looked fine.

Why not use anti-seize?

I forgot about this until I looked up the torque specs...

Attachment 29315

Aluminum cylinder head. 15lb ft is not very much at all.

Interesting... however, I disagree. The reason you use anti-seeze is to keep the 2 metals from bonding causing a siezed thread. But oh well. Is that from a service manual? If so which one?