Best spark plugs for a cammed 5.7?

EdGs · Feb 25, 2023

Hope there's not two sets on my 4.7 because I only changed one.. LOL

I did have the heads off and I didn't see an extra plug anywhere

Bigskyroadglide · Feb 25, 2023

I put iridium in my 11, updated the coils with those from a 2015. Coils Same part number as the 11. No worries no codes. This was at 120k miles, so i figured coils at that time were reasonable. Sold truck with 150k on the clock, it's still going, every time I see the guy he tells me it's great.

Wild one · Feb 25, 2023

EdGs said:
Hope there's not two sets on my 4.7 because I only changed one.. LOL

I did have the heads off and I didn't see an extra plug anywhere

What year 4.7 Ed,the later redesigned 08 and up 4.7's were all dual plug,they also got the HO cams.

EdGs · Feb 25, 2023

Wild one said:
What year 4.7 Ed,the later redesigned 08 and up 4.7's were all dual plug,they also got the HO cams.

'02 JTEC

mdc1990zr1 · Feb 26, 2023

Wild one said:
You'd need to rob banks for a living to afford them,lol

There's no more gold in Fort Knox to make them. And you can't make new spark plugs out of IOU's.

Best spark plugs for a cammed 5.7?

EdGs

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Bigskyroadglide

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Wild one

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EdGs

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mdc1990zr1

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