First Generation Firebird-L Mailing List ......................................................................... AC Delco Rapid Fire #1 works great in a 400
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Vince Sent: Saturday, August 15, 2009 9:32 PM To: First Generation Firebird-L Subject: Fw: [FGF] Spark plugs First Generation Firebird-L Mailing List ......................................................................... The second digit (in this case 4 or 3) denotes heat range. I don't know the difference between a 4 and a 3. I use a 45 in my '74 400. The AC Delco website recommends against using a different heat range, but they probably have to say that. The first digit (4) is the thread size, so obviously that has to be the same. Here's the AC Delco web site http://www.acdelco.com/parts/sparkplugs/identification.jsp Vince 69 Conv Northern NJ http://firstgenfirebird.org/show/closeup.mv?CarID=720 ----- Original Message ----- From: "Ridell, Niklas (C.N.)" <[email protected]> To: "First Generation Firebird-L" <[email protected]> Sent: Thursday, August 13, 2009 8:35 AM Subject: [FGF] Spark plugs > First Generation Firebird-L Mailing List > ......................................................................... > I was at my parts dealer to pick some AC delco R44S plugs for my 400 > engine. > They told me they aren't produced anymore and that I should use the > R43's instead. > > Is this true or just bull? > > > /Niklas > > > ------------------------------------------------------------------------ > Submissions to Firebird-L: <[email protected]> > Unsubscribe from Firebird-L: <[email protected]> > Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> > > Classifieds: <http://FirstGenFirebird.org/ubb/> > Owner Pictures: <http://FirstGenFirebird.org/show/> > > ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/>
