spark plug recommendations !!

[08C6Z06]

what do yall recommend. going with another plug or staying with the stock ones? my mods are in sig , the others mods i have done is vetteair and higflow cats . thanks

[ZO6 AL-X]

I would run the same plugs I'm running right now - the NGK TR55s. The LS motors really like these plugs. Good luck.

[DJWorm]

NGK TR55's are OK for street applications.

If you are going to track the car and want better reliability and performance switch to a Silver electrode plug. Silver has the best thermal and elecrical conductivity specs. Forget about Platinum, Iridium and Copper. and other mullti electrode gimmicks.

I recommend Nology Silver Racing Plugs, Part # G4YS or Brisk Silver Racing, Part # DR 17 YS. OR Beru Silverstones if you can find them (no longer made).

Note that the above NGK's, Nology's & Brisk need to be indexed for maximum performance.

The best racing sparkplug available is the Silver electrode Brisk LGS Premium Racing plug. This is used by Lamborghini and Ferrari. Part # DOR 17 LGS. This plug has a center Silver electrode and 4 recessed grounds. It does NOT need to be indexed. This plug offers the best 360* flame spread. I recommend this plug for maximum effort competition.

I recommend Magnecor KV85 Race Wires for non-Capacitive Discharge applications. These are the most reliable and low impedence wires available.

If you want to go with a higher performance CD wire I recommend Nology "Hot Wires". These must be grounded correctly. You may also want to consider installing Nology HD engine ground straps with this application.

[08C6Z06]

well i put ngk tr55s and the car didnt like it. the car would start bulking under part acceleration i guess running lean since its a hot plug. i then looked up ngk and it recommends the TR6s for the ls7, i then switched to tr6s and car runs awesome now. i have always used tr55s on my ls cars but i guess the ls7 likes a colder plug.

[ZO6 AL-X]

Thanks for the info since I see vendors selling the TR55 for the LS7.

[427 Kid]

I dance with who brung me.
Stay with the Sparkplug the factory engineers deemed good.

Beware, Splitfire has resurected itself from bankruptcy and is selling their garbage again.