AC Delco spark plug gap

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Apr 6, 2010 | 11:36 AM

69gto96z

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From: Rockwall, TX

AC Delco spark plug gap

I usually run NGK TR-55's gapped at .050. I was going to buy a new set of plugs, but I found a whole set of AC Delco rapidfire plugs in my pile of stuff. They are brand new, bought em a few years back and never used em. Heres a link to em http://www.autozone.com/autozone/cat...uestid=1107221

What would you guys gap these at? I was thinking .050 would be fine, but want to get a second opinion.

Apr 6, 2010 | 11:59 AM

StealthFormula

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From: Skippack, PA

If a .050 gap has been working well for you I would just go ahead and gap those the same.

Apr 6, 2010 | 12:14 PM

illusions

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From: Summerville, SC

I agree gap them at .050 since its working for you. There should be no need to gap different then factory spec unless your running Forced induction or nitrous with colder range copper plugs.

Apr 6, 2010 | 12:20 PM

jc98ss

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From: Murfreesboro, TN

weren't some ac delco's gapped at .60, but then changed to .40 cause they ran better?......i think it's the iridiums 41-985

Apr 6, 2010 | 12:23 PM

69gto96z

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From: Rockwall, TX

Awesome, sounds good, I didn't know if there would be a difference since these are platinum tipped I believe. I ran .035 gap back when I was using TR6's and some spray, but for all motor .050 has been prefect.