Just got off the phone with NAPA here in the Rock. For
STOCK ignitions you could still use the platinum 3923
part no. AP3923 or for the 3924- AP3924, cost $1.89 each.
I've used the 3924s and have had good performance with them,
but they are comming out to check the electrode wear and gap.
GS -
> Gotta put my $0.02 in here... I too read all the hype about the Autolites here
> on the DML so I bought a set of 3923's - they were 99 cents each - thats pretty
> cheap I thought. Put them in and sure enough I thought I felt a little more
> pep in the ole butt dyno. A few weeks later my Accell coil arrived and after
> installing it, I pulled out the 3923s so that I could increase the gap
> slightly. I was amazed at what I found - 2 things that jumped out at me after
> the first plug came out - they were discolored quite a bit - looked up the
> problem in several reference books and they all said "plug heat range too cold"
> - - hmmmm But that wasn't the worse problem - the electrodes were eat up too -
> gap was 0.050 already - and after only 1,500 or so miles - wow - something aint
> right. I went back to my toolbox where I kept the old stock Champions that
> gave me 60,000 trouble-free miles without a single blemish to compare them to
> the 3923s. The Autolites were wore down MORE than the Champions!
>
> The Autolites never went back in - now I run Champion 4071 truck plugs. The
> old man at the parts house laughed and said "I knew you would be back as soon
> as I saw you buy them Autolites a few weeks ago - good choice - them Champions
> will last forever....You get what you pay for"
>
> Not wanting to start a war here but just thought someone might value this
> experience. Furthermore, if you look in the 2000 Mopar Performance catalog -
> they too have a recommendation for "High Performance Spark Plugs" on page 38.
> The caption reads "Designed for Mopar Performance Parts by Bosch Motorsports,
> these spark plugs are designed for optimum performance of your Mopar engine".
> Part number is P4876926 for 3.9L/5.2L/5.9L/8.0L engines (4 per pkg).
>
> Latr,
>
> Shane
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