I have seen alot of talk about the 3923 plugs
I went to Pep Boys and asked for them, for my 4.7
they said those werent the ones that I needed the 5224's
is this right ?
I have already put them in and still running the same times at the track
I wasn't expecting much of a gain but want to make sure I have the right ones.
check out some pics of my truck taken by Chuck from the Epping meet last
weekend !!
http://www.intense99dak.com/andy.htm
-Andy
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