Steve, I replaced my factory Champions with the Autolite Platinum Pro's in my
4.7. The main reason I changed was just to get the old ones out and make sure
that there was anti-seize put on what ever I replaced them with. The Autolites
are doing just fine and the thing runs great with them. I can't imagine
putting in copper plugs in to get maybe 1 or 2 short-lived horses if there is a
posibility that it could damage the ignition system. The Platinum Pro's are not
cheap though. They were almost $5 each. You could go with the standard Autolite
Platinums and I think they are about $2 or $2.50 each. I figured I wasn't going
to need to change them for a couple years so I decided to spring for the more
expensive ones. YMMV
--- previous post ---
Date: Thu, 19 Oct 2000 21:18:13 -0700
From: "Steven T. Ekstrand" <cyberlaw@earthlink.net>
Subject: DML: Re: Re: Re: 3923's in a 4.7L-HELP!!! Platinum vs. Copper
Page 19 of the Fall 2000 Dodge Owners Magazine has an article on 100,000
mile tune up. Fine if you're a Northstar owner or a 95 Z28 owner. Hardly
a value to me in a 4.7L with the airbox removed for a Quick D intake.
It states clearly in the article that the coil on plug design is a low
voltage system which depends on Double Platinum plugs to deliver adequate
spark.
I would not use them in a hipo system, but it seems the right thing to use
in a 4.7L. So far, I have 8 responses saying COPPER ONLY (since the first
time I asked this question). Nobody has said stay with the DP's.
But every response has been based on the wrong engine or the wrong set up.
What is appropriate for the 4.7L and the limitations of its ignition???
- -STE
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:56:14 EDT