C3 Ignition Coil - NCRS Discussion Boards

C3 Ignition Coil

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  • Jay L. Flinders

    C3 Ignition Coil

    I need to find the correct Ignition Coil for my 1968 327/350 L79 wo/transistor ignition.

    My question is: I have found a unit that is a reproduction of original with GM tooling. The seller says the part number is 1115270, embossed with 270.

    In researching for the correct coil I refered to the Motor Books Workshop - Corvette Parts Interchange Manual 1968-1982 and on page 91 it shows "1968 327 wo/transistor ignition, part number 1115270. Usage: 1968 - 1971 Corvetter wo/transistor ignition; 1964 -1967 Impala & Chevelle with transistor ignition; and 1964 - 1969 Pontiac with transistor ignition". All of this is fine and good.

    The problem and question I have it shows "Notes: stamped 176 - 12V". So was the orginal coil empossed 270 or 176?

    Yes, the Judging guide page 47 says: Coils are embossed with the last three digits of their Chevrolet part number and those embosed with 270 and 263 have the letters "B-R" below the numbers. The judging book does say the 1115270 is also for the 300HP.

    Maybe in the interchange book "stamped" is something other than embossed?

    Anybody out there have an orginal 1115270 ignition coil for a 327/350 L79?
  • Jack H.
    Extremely Frequent Poster
    • April 1, 1990
    • 9906

    #2
    Re: C3 Ignition Coil

    Factory originals are indeed stamped '170. Some are 'BR' while others are 'B-R' and I don't think we really understand this minor difference...

    Comment

    • Charles P.
      Expired
      • April 30, 2005
      • 332

      #3
      Re: C3 Ignition Coil

      Original coils are stamped 270 over BR or B-R, both are equally rare as this was not a service part. There is a Delco restoration (new) part out their that is stamped 270 over 12V (the BR or B-R is omitted). It is a very good looking part but savvy judges will most likely notice the lack of the BR. Also I noticed that the repro coils diameter is slightly larger than the original as the bracket screw, even played all the way out was not long enough unless you struggled with it.

      Comment

      • Gary Schisler

        #4
        Re: C3 Ignition Coil

        Are you wanting photos of 270 coils? I have two original ones that I can photograph for you if that is what you are interested in.

        Comment

        • Jay L. Flinders

          #5
          Re: C3 Ignition Coil

          I would appreciate a photo. Not willing to let one go are you?

          Thanks Jay

          Comment

          • Jay L. Flinders

            #6
            Re: C3 Ignition Coil

            Do you mean "270"?

            Comment

            • Jay L. Flinders

              #7
              Re: C3 Ignition Coil

              I contacted the seller of the reproduction coil and asked if it had "B-R" under the number and they assured me that it did. So what do you think? I guess a reproduction is better than not one at all. Jay

              I no what you mean about the repos being a little larger in diameter. I needed a "263" for my big block. I got one of the repos and it is very good looking but like you say it is a little larger than the orginal.

              Comment

              • Jack H.
                Extremely Frequent Poster
                • April 1, 1990
                • 9906

                #8
                Yes, '170 is a typo...SB '270 *NM*

                Comment

                • David D.
                  Very Frequent User
                  • April 1, 1990
                  • 330

                  #9
                  Re: C3 Ignition Coil

                  Jack, I always thought the BR and B-R were just different manufacturer's or dies that were used, at different times in manufacturing them. By the way, you probably already know, but others may not, the BR or B-R will only be found on standard ignition coils and is not on a TI coil. It is an abbreviation for use of the coil with the firewall mounted "Ballast Resistor", used with the point ignition's. FWIW. Dave

                  Comment

                  • Jay L. Flinders

                    #10
                    Re: C3 Ignition Coil

                    Yes. One of your "270" B-R Ignition coils.

                    Jay

                    Comment

                    • Wayne M.
                      Expired
                      • March 1, 1980
                      • 6414

                      #11
                      Here's a rough B-R 270

                      which, if I'm not mistaken, was from a 1973 base-engine metallic lime green coupe.

                      Maybe Gary can post a cleaner example.




                      Attached Files

                      Comment

                      • Gary Schisler

                        #12
                        Re: C3 Ignition Coil

                        Not for sale. You never know when a 35+ year old part is going to fail. Having a spare coil is good (especially when I paid a grand total of $5 for this. It was painted candy apple red!) I will throw photos your way and you can post them if you choose.
                        Gary

                        Comment

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