C3 emissions label - NCRS Discussion Boards

C3 emissions label

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  • Jack O.
    Very Frequent User
    • July 31, 1996
    • 525
    #1

    C3 emissions label

    I have an early '69 427/435. The emissions label on the firewall above the master cylinder has a 'U' on it which I haven't found on any other 427/435. I know the car is correct since I have the tank sticker but I haven't ever seen this emissons sticker on another 435 car. Paragon repro shows this sticker correct for a '68 350/350 so perhaps the factory was using up stickers from '68. Does anyone have a '69 427/435 with a 'U' emissions sticker or a '68 350/350 with the same?
    Thanks
    Jack Ottofaro
    Tags: None
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    • Tom R.
      Extremely Frequent Poster
      • June 30, 1993
      • 4081
      #2
      Re: C3 emissions label

      Jack:

      In 69, emission labels went to the two-letter code. The "U" code was used in 68 on the 327/350 manual transmission, engine suffix code HT. Code "CN" is used on 427/435s.

      I don't believe the factory would have been using up their inventory...these were the emission certifications that a particular power team met the federal emission standards for a given production year which is not to say that deviations never occurred. Look to see if it was placed on top of another which remains underneath.
      Tom Russo
      ​
      78 SA NCRS 5 Star Bowtie
      78 Pace Car L82 M21
      00 MY/TR/Conv
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        • Dick W.
          Former NCRS Director Region IV
          • June 30, 1985
          • 10483
          #3
          Re: C3 emissions label

          Jack, the CN label was used on '69's with 427/435, both manual and automatic transmission. The part # on the label was 3959136
          Dick Whittington
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