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i need help with spark plug selection

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Old May 4, 2014 | 04:48 PM
  #1  
mike rich's Avatar
mike rich
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From: ft sill ok
Default i need help with spark plug selection

So i have a ls1 with
Stock 243 heads
Tsp 288r cam
Long tubes
And a couple other small mods
I am Putting down 390 at the wheel.
I was told by my buddy i need to run a step colder plug bc i have about a 100 more hp then stock and that you should go a step colder for every 100 hp you gain. So my question is what kind of plug should i run. I was told the br7 would be perfect for my set. Any input would be greatly appreciated.
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Old May 4, 2014 | 05:31 PM
  #2  
LoneStarFRC's Avatar
LoneStarFRC
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Default

With your setup, there's no need whatever to not use the AD Delco Iridiums, in the stock heat range, or any of the other quality Iridium plugs out there, i.e. Autolite, NGK, Bosch, etc.

Forced induction, nitrous cars, etc should consider making heat range and/or gap changes, but if you're not experiencing a specific problem, just remember: "If it ain't broke, don't fix it".

HTH
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