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Author Topic: 4.9 plugs  (Read 14042 times)

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scottb

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4.9 plugs
« on: September 29, 2019, 04:26:11 pm »
Anyone have any recommendations on 4.9 plugs? The 4.9 Formula has AC Delco 41-902 in it that need to be replaced. I think that is part of the motors laziness. Any other suggestions?
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GTRS Fiero

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Re: 4.9 plugs
« Reply #1 on: September 30, 2019, 06:54:02 pm »
What were the stock plugs for the 4.9?

Which PCM are you using?
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scottb

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Re: 4.9 plugs
« Reply #2 on: September 30, 2019, 07:11:17 pm »
Im not sure what stock is...

It is a stock cadillac compooter
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GTRS Fiero

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Re: 4.9 plugs
« Reply #3 on: September 30, 2019, 07:39:37 pm »
Probably something like this: RS14YC6
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MikeMac

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Re: 4.9 plugs
« Reply #4 on: September 30, 2019, 11:45:52 pm »
Quote from: scottb on September 29, 2019, 04:26:11 pm
Anyone have any recommendations on 4.9 plugs? The 4.9 Formula has AC Delco 41-902 in it that need to be replaced. I think that is part of the motors laziness. Any other suggestions?
Are you asking for brand recommendations or a specific plug part number? You can't beat AC Delco in a stock application. Champions Maybe?
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TopNotch

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Re: 4.9 plugs
« Reply #5 on: October 01, 2019, 08:00:40 am »
I asked my brother Mike. He said he has had his 4.9 Fiero for 3 years, and has never changed the plugs yet. So he doesn't know what they are.
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