B_5point3

What spark plugs is everyone running on their 2014+ 5.3?
I can't seem to find any that spec out the same and be 2 steps colder.
Thanks in advanced.

B_5point3

Anyone?

Atomic

iTrader: (42)

BR7EF not fit?

B_5point3

I'm not sure. I haven't tried any yet.
Trying to see what has worked for everyone before I buy any. I see those get suggested quite often so I might just try then out.

Thanks for the reply by the way.

Atomic

iTrader: (42)

Stock is like a TR5, one step colder is the TR6, then BR7EF is 2 steps, B8EFS is 3 steps, etc. If they didnt change the spark threads on the head then those should work fine.

B_5point3

OK sounds good. Gonna get some ordered. Thanks for your help.

racinhonda450

Brisk racing RR14S is what I used on my 14 with a 150 shot made 400hp 500ft lb on a hub dyno

B_5point3

Thank you. I appreciate the info.

Nice numbers by the way.

thewrx

Yes different thread than standard tr6/5 or br7 that all other lsx heada use normally. I had issues changing from the factory ac delco platinum to an ngk comparable and after $120 in plugs went back to factory spec ac d plug with my maggie too, 450whp but prob doesnt matter, boost is minimal.

B_5point3

Thank you for this info, I appreciate it.