Plug gap

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Apr 10, 2014 | 10:14 AM

trawler

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Instructor

Joined: Oct 2013

Posts: 239

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From: McDonough GA

Plug gap

What is recommended gap for NGK TR55 plug for stock 2011 LS3?

Apr 10, 2014 | 10:31 AM

Don-Vette

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Joined: Jan 2011

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From: Tonawanda New York

.040 as per your owner's manual.

Apr 10, 2014 | 10:37 AM

trawler

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From: McDonough GA

Read the owners manual, also looked on forum and there are lots of replys ranging from .040 to .060 and somewhere in between. Think you are right just go with what GM recommends.

Apr 10, 2014 | 11:36 AM

Hameister

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2015 C6 of the Year Finalist

Quote:

Originally Posted by trawler

Read the owners manual, also looked on forum and there are lots of replys ranging from .040 to .060 and somewhere in between. Think you are right just go with what GM recommends.

My MO for almost anything, is to go with what the Owners Manual recommends, unless there is considerable verifiable evidence to the contrary.

Apr 10, 2014 | 06:51 PM

haljensen

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Joined: Mar 2005

Posts: 10,399

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From: Austin Texas

And don't believe that all new plugs are pre-gapped. In my many years of changing plugs I've never seen all the plugs in a box pre-gapped correctly. My first plug change was my '49 Ford in 1957.

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