best LS1 spark plugs ?

[0verkill]

ya thats what i ment. i just saw what thay sead on tv thats y i would like to see what some one has to say that has used them thanks

[WeaponX_Perf]

Stock is 0.060"
Gap for the TR55's on a stock or near stock motor should be set at .055".

I think the iridium plugs call for lower gaps.

Iridiums would allow you to open up the gap vs an equiv Copper plug. I'm actually surprised that a copper plug is the plug of choice since the change intervals are only about 10K. By the time you hit 60K you will need 6 plug changes and your time changing the spark plugs which ends up costing more, is a PITA changing plugs, all for less power. (We have done back to back dynos to verify this)

While the iridium design does last longer the ignitibility potential of the fine wire design does improve the combustion process. Jump into the thread I just made, I can show you some bench test results of a fine wire design vs a copper design.

[shadowsnkx]

I think anything other than copper burns too hot for the engine.

[WeaponX_Perf]

I think anything other than copper burns too hot for the engine.

That is a myth. Since the copper has a larger surface area it actually absorbs more heat then a fine wire electrode. When you absorb heat your absorbing energy from the flame front causing a loss of power. Not to mention fine wire electrodes come stock on almost all cars these days.

[cold_surfer]

just put in the TR55's yesterday. runs much stronger than the stock wire-type ones with 87K on them. The old plugs are amazing to me -- so much use from a plug.

the low resistance wires seem to improve the low end torq. But what I learned from my Yukon with a 5.3L is that the low res. wires burn out stock plugs FAST. I ended up going back to stock 7mm wires and factory plugs on the Yukon and it runs fine. It seems new is good in the ignition department -- not the 50K-100K interval.

I'll probably run the TR55's for 15-20K miles and switch back to factory stuff to see the difference.

I do think the V helps the LS1...

[Mr. Luos]

Spark plugs and plug wires should NEVER add performance or power.

[wildbanshee]

grabbing some ngk tr55s today thanks for the great link....

[Y2KPewterSS]

Spark plugs and plug wires should NEVER add performance or power.

You need to study up on WeaponX

[0verkill]