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  • Engine Code Help

    I need help with an engine code. I bought a street rod and the guy said it has a 455 from a 76 trans AM. The code on the passenger side head is YX. the engine has a factory eldebrock manifold with a carter 4 bbl. Can any one confirm for me the engine size is a 455 and the year.
    Thanks
    Rich

  • #2
    check out wallace racing...
    72 Luxury Lemans nicely equipped!

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    • #3
      You need to check these places on the heads,block for numbers codes.

      Pontiac never put Eldebrock intakes on at the factory.

      Check www.wallaceracing.com

      The picture with the transfer lug is 455 only
      Attached Files
      '65 Goat

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      • #4
        Thanks indymanjoe I will

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        • #5
          Thanks for the info. Idetermined from the YX code and wallace racing site that this is a 455 from 1974. I appreciate the reply.
          Richksales

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          • #6
            Nice score!
            72 Luxury Lemans nicely equipped!

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            • #7
              Which heads are on it?

              Sent from my nerd phone bitches!
              HARDCORE for the Cause!!!! Detroit Charter President!

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              • #8
                Not sure, give me some more info as where to look for #'s, code etc. The engine is in the car and running well.

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                • #9
                  Look over the center two exhaust ports, whats on it?

                  http://www.wallaceracing.com/head1.htm

                  Notice the "5c" on the pic, that is what we need to know, you can prolly look it up yourself on the same page. all good info. Let us know what ya got....
                  Mac


                  69 Firebird

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