Herd of them never used them before but that is a GM plug right?

 

never herd of em.

 

gm uses ngks..

 

the dealer told me the best ones for the cobalt are the rapid fire. i don't know anybody that uses them i keep on seeing NGK everywhere

 

AC Delco = NGK

 

Where did you guys get the Zex plugs and how much did they cost? I found some for $19.06 for a set. Is that a good price?

 

i got mine at mopac in calgary, i paid like 25bucks canadian ..........so yeah 20 american is good

 

hey saunders. is that 25$ a piece or for all 4? Iam in cal right now and would like to buy some b4 i go back home to nb

 

Wallas above said he found the set for ~$19.00

 

yeah man, just saw that... sorry. I was told that they where 80$ for a set before, thats why I had a hard time beleiving that. Anyone know what model Zex I should order when I call tomorrow?

 

25 bucks for a set of 4 part number 82003-4

 

brk7e = one step colder plugs for 42.5lb injectors and pulley to 2.8

spark plugs are spark plugs, your not gonna see any difference in a the quater mile from changing spark plugs.. yes the iridiums i bet will last longer, depends on how much your beating on that engine. if they last 60k great or even 40k.. 15 bucks isnt that bad to replace them

 

Forget what metal the spark plug utilizes, it's the quality of the plug itself. You won't gain any time in the quarter mile with a set of good plugs, but you WILL lose time (And potential harm your engine) if you don't make the right selection of type, heat range, and gap size.

 

^^^^ exacly what I was thinking!

 

well i went to zex.com and they dont have ne for the chevy so does it metter which ones i should get??

 

I dont know man, just get the part # thats on here and you should be fine!!

 

but are the spark plugs all the same size or is the thread all the same?? cause i dont wanna "break the bank" haha but really tho i dont wanna buy the wrong **** ya know

 

I dont know man, I will know sunday. I will compare the lenght of the treds, but this is what I was told was "the spark plugg" to buy!

 

Yes it matters. Get the ZEX part number 82003-4 plugs. No need to gap them.
I run them and they are great. Check the sig.

 

I thought our stockers were platinum. not iridium.

 

BWAHAHAHAHAHAHAHHAHAHAHHA



::breathes::


BWAHAHAHAHAHAHAHAHAHHAHAHAH


no.

 

gonna have to agree here too.

arent zex those 3 pronged lookin things?

If you do a little reading youll find that multi spark plugs arent suggested for F/I applications.

 

i run a 2.8 and 60's.
i had my car in for a dyno tuning session, when the pos NGK coppers died, and my car was misfiring and running rough only above 5k rpm. too bad the tuner didnt notice it on the dyno. he took out 5 deg timing to make the knock go away. i went back to .028 iridiums on advice form the tuner, and just the plugs woke the car right up, and misfires went away. i used coppers before (gapped at .030) because TAG in toronto recommended them and send me 4. they lasted 2 tanks of gas. maybe it was the 25 dyno runs that cooked them too.
personally, i think 28 is too low.
p.s. of coarse the dyno tuner is far too busy to fix my de-tuned car.... bah.

 

it says right on the box (something about how its made for F/I and Nos) so yeah, no Zex seem the better plug. All i know NGK BRK7E are crapp

 

I have run both in my car.

The NGKs were good to me for about a year and then they ran like crap.
I have no gripes with them, they treated me well.

I run the ZEX plugs now. I even tuned with them. They are great plugs with no issues.
I want to see if they last a year like the NGKs.