I had an old set of Autolites that were an obsolete number. Yesterday another IML'er asked the number for the 413, but I wanted to provide a current number, so I called my parts supplier and he gave me the "75" for the '59-'65 413. Interestingly in Champion, there were two numbers that would fit, one was a "high performance" plug. I gave the IML'er all of the numbers and recommended that he check a tune up parts Web site to verify the numbers. I haven't heard that the "75" wasn't the right one for that car. I suspect that possibly a "75" is the standard plug, and that the "85" may be a hotter plug. It is also possible that the parts guy was completely wrong. Back in the "old days" if an engine was a little worn, but ran good, we would run a "hotter plug" to postpone the inevitable oil fowling. I am now thinking that I may have bought "85"s for a '65 Chrysler 300 Coupe that I used to have. Paul In a message dated 2/26/2004 9:52:08 PM Eastern Standard Time, jsadowski@xxxxxxx writes: > Paul, Are you sure Autolite # 75's will work in a 413 -440? I use # 85's in >my cars. > John > ----- Original Message ----- > From: RandalPark@xxxxxxx > To: mailing-list@xxxxxxxxxxxxxxxx > Sent: Thursday, February 26, 2004 5:06 PM > Subject: Re: IML: FW: Plug Number 63 413 > > > I just looked up the plug numbers yesterday. In Autolite it is "75". I have >the Champion number too, RJ12YC or RJ14YC. > > Paul > > In a message dated 2/26/2004 5:31:21 PM Eastern Standard Time, >bshea@xxxxxxxxxxxxx writes: > > > > > > > I connected the ballast almost wants to start but will not fire.What is the > > plug # for a 413?If I get it started,does anyone want this motor? > > > > -----Original Message----- > > From: Brian Shea [mailto:bshea@xxxxxxxxxxxxx] > > Sent: Monday, February 23, 2004 8:03 AM > > To: Mailing-List > > Subject: starting 63 413 > > > > > > I turned the motor over by hand, put a new battery in it,and it turns over a > > little slow and wont fire.I noticed 2 wires that were chewed on the fire > > wall.They look like they were connected to > > two white resistor looking things.Are these ballast resistors,and would thi > > have an effect on the spark.The points are set perfectly. > > > > > >