AChotrod

iTrader: (17)

Just wondering how long you guys are going between spark plug changes?
Seems to me running a BR7 and most the time not spraying dirties up the plugs pretty fast over a NA gapped plug.

a4ls2goat

i wana know too

jmm98LS1

iTrader: (28)

I put fresh plugs in every spring when it comes out of hibernation. Otherwise I never put all 8 plugs in unless I make a change to the nitrous tune. I'll put one in a hotter cylinder & make a pass to make sure the tune is still clean every now and then. I put less than 2k miles a year on mine, but I run -8 plugs in it and never foul any from street use.

19kiloz28

What plugs are best?

ATVracr

iTrader: (5)

Every pass until the tune is dailed in.

Once its dailed in every race day and we spot check duing the race.

Tony Shepherd

iTrader: (4)

dannyz

How big of a shot are you running?
If your at 125 or below, you can run a tr6 plug and I have gotten 8,000 miles out of quite a few sets.
You just have to watch your timing.
Now, most people here will start bashing on the tr6 plugs right away, as it is a projected tip plug.
But, if you look into the LS-1 tech archives, you will probably be surprised to find that tr6 plugs have been used for smaller nitrous shots since this site has been started.
If your hitting it with a 150 or above, then the tr6's are not for you.

NOTFAST

iTrader: (10)

ON a car I daily drive with a br7, every 5 or so passes.

ON a car I don't drive daily with a br7, every 20 or so passes

shortdog

iTrader: (1)

If you look into the archives, you will probably be surprised how many folks have hurt their motors using tr6s including me. I hurt mine on a 125 shot about six years ago. Nomore tr nothing for me, n/a or bottle

dannyz

Well, it was either your timing or a/f, not the plugs. There is page after page after page of folks using tr6 plugs on smaller shots without any issues whatsoever.

ATVracr

iTrader: (5)

We could spray 400 with tr6 and maybe not hurt it.
But why risk it when there are better plugs out there?

03EBZ06

I usually run TR6s@0.040" on the street and the non projected 6 or 7s@ 0.030" at the track. My current nitrous plugs ran for 2 race days and got yanked. I pull them after a race to inspect the engine and tune.

For $20, I have a hard time not changing them often.

mrdragster1970

Same here, but I would mention, you should not use the same plug for running on nuts & spray.
Unless you are talking tiny tiny kits??
You will run quicker with a little more heat on nuts then a N2O plug.

When I walk in and get a new guy at the store they always think I'm joking or a nut when I order 50 at a time.

.

Carter01

iTrader: (11)

Plugs are cheap, don't skimp! Over the past year I have bought around 150 plugs or more. Listen to the fastest guys that can keep a motor together. Several have posted in this thread, you be the judge?