spark plugs

[R.Beezy]

Anybody got part numbers for Autolite Platinums or Bosch Platinum spark plugs? Would these plugs go good in conjunction with the Granatelli Wires or should I just stay stock??

[lt1z]

I wouldn't bother changing them unless you need to change the heat range, which is only necessary for nitrous and forced induction motors

[matts]

what he said, i've been told by too many people that the stock plugs are just as good as the stupidly expensive ones. and i've had a vehicle that didn't like anything BUT the stock plugs. again, like he said, and you're needing to change heat range

[BBA]

I set my stock ones to .055" gap and increased dwell by 4º at each rpm setpoint. Made a difference in smoothness and response.

Screw granatelli and their high priced wires.

[TrailLaser]

I set my stock ones to .055" gap and increased dwell by 4º at each rpm setpoint. Made a difference in smoothness and response.

Screw granatelli and their high priced wires.

To each thier own... Try your stock ones with headers, burn baby burn..

[R.Beezy]

ya i figured id get the responses i got. i've heard the stock plugs are better, but then again, with platinum plugs you get a bigger spark which in turn leads to more power (???).

so with our trucks, thats a misconception (???)

[Blades]

Does anyone know the differences in resistance of these materials? I know that copper has less than iridium.. Silver is the best, but they rarely use silver for spark plugs. Any more info?

[Skiba]

The better question is, what are the fast guys running for plugs? (If you are looking for performance and not longevity)

[BBA]

The fast guys are running TR6 if I remember.

[lt1z]

The fast guys are running TR6 because they have either a blower, a turbo or a decent size N2O shot and needed to drop a heat range and close the gap up a little.

In the past I have always used NGK TR55 for N/A or TR6 for N2O. Since my TBSS is only a minor bolt on truck I am just going to keep the stock plugs until about 20K at which time I will probably change them over to NGK iridium.....Looking more for longevity than anything else with the plugs on the truck.

[Blades]

I have changed my plugs more than I'd like to admit. I am content with Tr55s @ .050 Iridiums were not worth it and measured higher in resistance. If measuring the actual spark plug for resistance actually means anything..

[Skiba]

The fast guys are running TR6 because they have either a blower, a turbo or a decent size N2O shot and needed to drop a heat range and close the gap up a little.

In the past I have always used NGK TR55 for N/A or TR6 for N2O. Since my TBSS is only a minor bolt on truck I am just going to keep the stock plugs until about 20K at which time I will probably change them over to NGK iridium.....Looking more for longevity than anything else with the plugs on the truck.

LOLs and not always true. Plenty NA guys running them. It's definitely not "too cold" of a plug for NA in this motor. If anything I would say the stock plug is a tad on the high end of the heat range.

[lt1z]

LOLs and not always true. Plenty NA guys running them. It's definitely not "too cold" of a plug for NA in this motor. If anything I would say the stock plug is a tad on the high end of the heat range.



It isn't too cold....the LS7 uses the TR6 heat range stock, but the LS2 stock plug should be fine for an NA motor.

[Skiba]

It isn't too cold....the LS7 uses the TR6 heat range stock, but the LS2 stock plug should be fine for an NA motor.

Which is fine. However we are all performance tuning and getting more power out of them aren't we?

[lt1z]

yes, some more than others. I understand where you are coming from, I guess I just look at my TBSS as a "fast" daily driver and some of you here are trying to squeeze every last tenth out of yours on the track. I have a Z28 for that kind of use. While I have done the basic mods Tune/CAI/Cat Back on my TBSS I plan to stop there because my 100,000 mile warranty is more important to me that dropping another tenth or two in the 1/4 mi.

I agree with Skiba that the TR6 would be the correct plug to use if you are going all out with your TBSS. If you are just having a little fun with it the stock plugs will be fine.

[Ames]

I wouldn't bother with plugs/wires, but if you must cheap copper NGK TR55's work well. I prefer the Denso plugs with Taylor wires.