Spark plugs

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Oct 26, 2010 | 12:52 PM

jesran48

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Spark plugs

I got some ngk 4177 spark plugs that ima put in a ls1 truck. But where should i gap them at? .40?

Oct 26, 2010 | 01:25 PM

Sales2@SDPC

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From: LUBBOCK T.X.

I am taking it that you are using these plugs because you are going to spay it or you are running super high compression. So with that said being a much colder plug than stock yes .040 gap will be good..

Oct 26, 2010 | 07:32 PM

jesran48

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So what would be stock gapping?

But im getting near to settig up a rear mount turbo system.

Oct 27, 2010 | 09:45 AM

Sales2@SDPC

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From: LUBBOCK T.X.

The stock is the same .040 but is a iridium plug and hotter.....

Nov 2, 2010 | 08:37 PM

WetChicken

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I do believe the LS1's w/AC Delco's were originally gapped at .060, then followed by a TSB for .055.

Nov 2, 2010 | 10:38 PM

AKlowriderZ71

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Well, since we don't know anything about how this "LS1 truck" is set up, how can we possibly give you any kind of accurate information? Just sayin....