the whole spark plug thing always confuses me i'm not going nitrous haha ill save that for the dentist

 

It's not that confusing man. Go read up on it on NGK's website.

This is true.

Forgot rice is going to run E85.

 

Ok so stock plugs stock gap fine by me

 

Stock heat range but not the stock plugs.

Pick up a set of copper core plugs. NGK BKR6E.

Stock plugs in the LSJ were either platnium or iridium. Get the coppers.

 

you still need to run a tighter gap .030 or less

never seen a plat or irid in a lsj stock

 

Mine came with iridium from the factory.

My GMR head came with platnium plugs and the head is date coded 04.

The manual calls for platnium plugs, the exact plugs im selling in my current for sale thread.

My factory plugs (iridium):


Plugs from my GMR head (double platnium):


GM wouldnt install copper core plugs from the factory. They do not have the service life of plat or iridium, although copper is superior for performance.

 

my stock ones were iridium too when i pulled em

 

mine were copper and all the ones ive worked on were copper from the factory

 

Very, very odd. You sure the ones you worked on had factory plugs?

All the manuals I've seen call for the NGK platnium plugs. Even my manual calls for platnium, yet it had iridiums from the factory. I guess just another odd ball thing GM did.

Did ya get your springs compressor buddy?

 

Well shoot maybe I should get coppers!

 

that's not completely true copper plugs do have the service life of iridium or platinum plugs it is more of a marketing gimmick but ive done several plug changes on 100k plus engines with copper plugs besides that the only difference between the copper iridium and platinum is the tip the core is still copper but the metal change in the tip is what makes it 10x harder to fire the plug

 

Not according to the NGK rep I spoke to, but whateve, no need to argue about it.

Copper are the best for performance, no need to beat a dead horse wondering which plugs to use.

 

I bought the car new so I was the first to change the plugs ill go look in the mail box

 

Ok.

 

im not arguing just posting what I was also told by ngk many years ago but copper is the best and they will last just as long as the others

 

I know ur not.

I'm just saying we don't need to get into a "potential" argument over it.

 

were not

 

quit arguing! jk

i plan to change or check my plugs a few times within the first few oil changes to make sure everythings doing ok

i do not have the spring compressor yet.

 

I like fake arguing with John. Keeps the blood flowing while I'm at work.

 

its at the post office I got to get it

 

Was the link for MrB bolts posted?
And for the correct heat range copper plugs?

 

For 93 octane tunes run: BKR7E's (one step colder copper)

For E85 tunes run: BKR6E's (stock heat range copper)

Ok.

 

Lol. I love when parts store sites tell me things that fit wont...

 

Ignore them, lol. That's cuz they arent the stock plugs.

The part number to give them is 4644 for the BKR7E's.

Just tell them you need 4. No need to tell them your vehicle make and such.

 

i just checked out without the info.
whatever lol.

bet money the dude at the counter asks me if they are for my ss and tells me they are wrong.