I don't know, but I have Autolite 5224s in my Ram's 5.2 -- the store I
bought them at listed them as the plug for my engine, and I got a good deal.
I don't put enough mileage on the Ram to worry about them wearing out :-\
-Jon
"Terrible Tom" <SilverEightynine@aol.com> wrote in message
news:430A3099.9060002@aol.com...
>
> Terrible Tom wrote:
>
>> So I'm looking up new plugs for the 360, and I see th 5224's listed...
>> not 3924s. Der - so before I went and posted to The List I figured I
>> would hunt through the archives - heh I found lots of interesting
>> posts... but none that told me why the 5224's were being used instead of
>> 3924's.
>
> Going to reply to my own post here - I kept looking in the archives and I
> found this:
>
> http://archives.dakota-truck.net/0010/6311.html
>
> Quote:
>
> "The 522? series is similar to the 392?, but has an extended tip that puts
> the spark farther down in the chamber, which has an effect
> similar to slightly advancing the ignition timing."
>
> End Quote
>
> Quote:
>
> "RAM 4.7/5.2/5.9 V8 Magnum PLUGS
>
> Champion RC12YC is the 1993-1998 factory installed plug.
>
> Champion RC12LC4 is a longer projected nose plug used on some V8 Rams
> since approximately 1998."
>
> End Quote
>
> I checked and the stock plug is listed as being the RC12LC4 kind. Now I
> know that the extended tip design is what my engine uses from the
> factory - but can anyone tell me *why* they changed over to the extended
> tip design?
>
> I think I am going to switch to a 5223 plug.
>
> --
> ---------------------------------------------------------------------------------------
> Rocks are for skipping... I'm all about the mud
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> AIM & Yahoo: SilverEightynine
>
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