Hi guys my name is Brad and I am from Australia. I have been reading a lot of info on this site about spark plugs. I have a LS1 with a mid size cam, stock heads and stock bottom end. I have been spraying a 200hp dry shot for the last 4yrs on the TR6 plugs and not had any problems. After reading thru a few threads on here it got me thinking that perhaps I should run a colder plug on my new engine which is LS3. It will be a similar combo to my current LS1 only with a bigger camshaft.
I have run consistant low 10 sec 1/4's with the LS1 setup and I am looking for a 9 sec pass with the new combo. Also the car will be street driven a fair bit as it is 400 km's to my nearest 1/8th and 800 km's to my nearest 1/4. Will I be able to run the colder plugs N/A with out too many problems?

 

for 200 shot you will need NGK BR8EF ( 4 step colder ) and gap them @ 0.35"

And BTW, any pics or videos of your build ? .. I know Australianz always do it right when in it comes to LSx ENGINES ..

 

With stock compression and displacement you are right on the fine line between BR7EF and BR8EFS plugs. I would start with the 8s and check the plug. If they are showing to be to cold then swap to the 7s.
Dave

 

Thanks guys, will let you know how I get on.
Here is a few pics for you



Not my engine bay this is a mates car but mine is the same setup



dyno sheet



NA pass

http://www.youtube.com/watch?v=SHVBE3GFpaA

N20 pass

http://www.youtube.com/watch?v=sAt1g...eature=related

1/8th mile n20 full street trim

http://s739.photobucket.com/albums/x...vie_0001-1.flv

 

Very nice, I try to pick up a copy of "Xtreme Holdens" or "Street Commodores" whenever I pass through Cairns.

 

Nice looking car...It looks like it leaves well.

 

Thanks, it's not too bad off the line best 60 foot is 1.53 so far hoping too get into the 1.4's very soon.