tune up...
05-06-2012, 07:00 PM
#3
Teching In
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It's not a super sexy performance plug, but I just replaced my stock plugs last November with the exact same plugs. I used AC Delco ACF 41-110 Irridium plugs. My stock ones had over 120k miles on them when I decided to freshen up the fluids and ignition at which time I was getting ~18.4 mpg on my 5.3 so I stayed with them. I gapped them according to my manual specification as follows:
99-03 = .060
04-07 = .040
99-03 = .060
04-07 = .040
05-06-2012, 10:24 PM
#5
On The Tree
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It's not a super sexy performance plug, but I just replaced my stock plugs last November with the exact same plugs. I used AC Delco ACF 41-110 Irridium plugs. My stock ones had over 120k miles on them when I decided to freshen up the fluids and ignition at which time I was getting ~18.4 mpg on my 5.3 so I stayed with them. I gapped them according to my manual specification as follows:
99-03 = .060
04-07 = .040
99-03 = .060
04-07 = .040
I did the same..Changed mine around 115K,and used the stock type plug.
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