I haven't bought any 75's myself. I do have a set or two of old plugs with obselete numbers, and they are resistor plugs. Now we know what the difference is between the 75's and the 85's. Paul In a message dated 2/27/2004 11:09:52 PM Eastern Standard Time, jsadowski@xxxxxxx writes: > Paul, I have since seen it posted that Autolite #75 is a non-resistor plug & >#85 is a resistor plug in the same heat range. I always buy the resistor >plugs, so this never occurred to me. > John > ----- Original Message ----- > From: RandalPark@xxxxxxx > To: mailing-list@xxxxxxxxxxxxxxxx > Sent: Thursday, February 26, 2004 8:19 PM > Subject: Re: IML: FW: Plug Number 63 413 > > > 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. > > > > > > > > > > > > ----------------- http://www.imperialclub.com ----------------- > > > This message was sent to you by the Imperial Mailing List. Please > > > reply to mailing-list@xxxxxxxxxxxxxxxx and your response will be > > > shared with everyone. Private messages (and attachments) for the > > > Administrators should be sent to webmaster@xxxxxxxxxxxxxxxx > > > To UN-SUBSCRIBE, go to > > > http://imperialclub.com/unsubscribe.htm > > > >