: Maggie Spark Plugs



barrok69
03-07-13, 09:57 PM
I was looking at going with the NGK TR6IX plugs, but think I'm going to go with the AC Delco alternatives 41-104 (iridium). They are also one step colder than stock gapped at 0.040" and what is used in the LSA/LS9 motor. I've always had no complaints with Delco's in my other vehicles.

I've read that i should gap them to 0.035" is that correct? Right now I have some junk champions in the car from when I bought it used. Keeping in mind I have a Maggie.

Also for anybody interested.... there is a wicked rebate going on for these plugs too. $2 mail-in per plug !! rockauto has the plugs for $4.71/each. So for $38 worth of plugs minus $16 it's only costing $22 + shipping. Rediculous.

Here is the rebate form. Looks like its good until december 2013!
http://www.acdelco.com/pdf/Spark%20Plug%20Rebate%20form.pdf

Look up 2010-2011 CTS-V spark plugs and they will be in the ignition category (there is no hardlink)

OneFast V
03-07-13, 10:01 PM
I run the factory remommended gap and I did not go one step colder on my spark plugs

Twitch
03-08-13, 11:48 AM
I'm running TR6 with no noticeable issues. I'm sure you'll be happy with AC delco.

Skidmarcx
03-08-13, 12:58 PM
TR6s here gapped at .035... Im sure Delco will work just fine

rand49er
03-08-13, 01:13 PM
OEM gapped at OEM here.

izcain
03-09-13, 12:22 AM
Had tr6's now has br7ef's changed due to the increased safety of a non projected tip plug as well as 1 heat range colder. All it takes is a nice little misfire and pop. Extra insurance not to having it poke into the chamber to far. Car runs fine with them. To each there own though.

http://i107.photobucket.com/albums/m283/izcain/IMG_4542_zps9a673526.jpg

tr6 on the right