spark plug gap?

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Sep 5, 2009 | 11:22 PM

redbadss

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spark plug gap?

i'm about to buy some spark plugs. what should i gap them to? originally i read that the gap was suppose to be @ .060

just a little while ago i read that gm later recommended the gap to be @ .040?

Sep 6, 2009 | 12:00 AM

klujan13

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I just replaced mine not to long ago and gapped at .060 runs like a champ.

Sep 6, 2009 | 12:35 AM

twitchtwice

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i got nkg tr55s and i just stuck em in there without changing the gap

Sep 6, 2009 | 07:47 AM

DaddySS

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From: Bergen County, NJ

The .060 gap for NGK or any platinums has not changed - the gap for the new AC Delco or any iridiums is .040.

Sep 6, 2009 | 11:02 AM

redbadss

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so if i got some iridiums i should leave the gap at .040?

Sep 6, 2009 | 04:41 PM

slayer_taunu

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a part search on NGK's site, and the part stores has changed from TR55's at .060, to TR5's at .040. i do not know the reason for this.

Sep 6, 2009 | 06:43 PM

Marinez28

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I just finished changing mine to TR55s and gapped them to .055 started right up and no problems driving.

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Sep 7, 2009 | 11:28 AM

USMC35thSS

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I think the TR55's come gapped at .050. I change it to .055 and it runs fine.

Sep 7, 2009 | 01:57 PM

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NJ 2002 Z28

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From: South Jersey

I use the NGK recommended .040 gap with my TR55's

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spark plug gap?

spark plug gap?

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