1971 LT1 Cylinder heads

Discussion in '1970 - 1973 Specific' started by Andrew Cabral, Aug 4, 2020.

  1. wnmech

    wnmech Veteran Member

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    My door tag shows September 1970 which is perfect. Thanks from the picture of my head how do I translate it for future reference?
     
  2. Andrew Cabral

    Andrew Cabral New Member

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  3. wnmech

    wnmech Veteran Member

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    Sorry I didn’t read the other post explaining how to read th code
     
  4. Andrew Cabral

    Andrew Cabral New Member

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  5. Andrew Cabral

    Andrew Cabral New Member

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    No worries. You need to see when your engine was assembled. The # is under the alternator on the pad. It may have paint on it.
     
  6. wnmech

    wnmech Veteran Member

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    2FE9CD5D-C8F5-411D-B46F-E464B4934736.jpeg 0E0FB66E-0767-4CFC-9105-98B852ACECB0.jpeg
    My block is a CE with a stamp of J131 which to me is Oct 13 of 71 and evidently they did use the original heads that came from the factory in the car. Looking at another picture my head stamp is H 3 0 instead of an 8
     
  7. Andrew Cabral

    Andrew Cabral New Member

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    That is the casting date. The assembly stamp is under the alternator on the pad surface.
     
  8. Andrew Cabral

    Andrew Cabral New Member

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    Here is a better pic showing the location. Just above the left side of the water pump. 71 Stamp.jpg
     
  9. wnmech

    wnmech Veteran Member

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    Ages ago I posted a picture of the pad ID and the guys couldn’t translate it. I will post the picture again 94FC5C56-7B8F-42BC-B7C3-02AFAA79BA31.jpeg
     
  10. COPO

    COPO Veteran Member Lifetime Gold Member

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    The CEC13312 stamp translates with the 1st digit after CE as the year 1971, the rest of the numbers 3312 is the sequence number of that block that was stamped in 1971 for warranty purposes. I don’t know why you have an extra letter C.
     

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