1. Nevada dan

    Nevada dan Well-Known Member

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    Can someone tell me what this came from it’s in my 68 roadrunner but I’m pretty sure it’s not original EB0E78A2-ACB7-49E2-B1C5-339236FE3BD5.png
     
  2. RemCharger

    RemCharger Well-Known Member

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    Whats the build date of your car and whats the cast date on the side of the block?
     
  3. Nevada dan

    Nevada dan Well-Known Member

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    1154A91D-2A15-4241-9B00-EC7547E5C7E7.png Couldn’t find the cast date it’s still in the car with headers and power steering not sure what the build date is would have to look at the vin tag in the door jamb and the car is at home
    The trans is original
     
  4. RemCharger

    RemCharger Well-Known Member

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    The fender tag has the build date. Need that. Also the info on the pad under the distributor.
     
  5. Nevada dan

    Nevada dan Well-Known Member

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    The pad on the front of the block is covered up too it’s a driver 97B80AB2-60B7-4D3D-A8E1-CF0FAB8C2E3F.png
     
  6. 1968rt

    1968rt Well-Known Member

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    motor was assembled March 9, 1968. premium fuel. looks perfect for a March 19 SPD
     
    Last edited: Feb 3, 2021
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    • Nevada dan

      Nevada dan Well-Known Member

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      should the vin number follow that ?
       
    • RemCharger

      RemCharger Well-Known Member

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      Why were you pretty sure it wasn't original?
       
    • 69Coronetrt

      69Coronetrt Well-Known Member

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      This one is easy...

      The engine assembly date is 2416 which is March 9, 1968.
      The transmission assembly date is 2418 which is March 11, 1968.
      The VIN on the transmission is 8G206389.
      The scheduled production date on the tag is March 19th. The assembly dates of the components match well with the production date of the car.
      So, look on the back of the block near the oil sending unit to see oil the VIN 8G206389 is stamped. If it is, then the block is original.

      If you don't find the matching VIN, tell what you find.
       
    • Nevada dan

      Nevada dan Well-Known Member

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      I looked at the top of the block by the oil sending unit there was nothing there it was pretty clean , they stamp it by the bell housing don't they it was just rough cast never had a number stamped in it
       
    • Nevada dan

      Nevada dan Well-Known Member

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      it's got an automatic crankshaft in it , I guess they could have swapped it in a rebuild then they had to cut the input shaft on the trans if its the original block I'll have to replace it, it just bugs me
       
    • R/T Boy 67

      R/T Boy 67 Well-Known Member

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      You can't say for certain that it is original without the partial VIN stamp, but the dates are perfect for your car. Not all 68 engines had the VIN stamp. It would be somewhere on the back of the block by the bellhousing, as stated.
       
    • 4mulas

      4mulas Well-Known Member

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      I agree with @1968rt.

      PT - Trenton Michigan
      385- very likely a mistake and supposed to be 383
      P - premium fuel
      2416 - March 9, 1968
      0533 - the 533rd engine assembled that day
       
    • Nevada dan

      Nevada dan Well-Known Member

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      Ya being that close I’ll have to rebuild it with the correct crank and replace the input shaft
      It’ll be a good project for when I retire next year
      Thanks for the help, I’ll have to get a better look at the numbers on the front
       
    • RemCharger

      RemCharger Well-Known Member

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      I'm guessing the pad will read

      D 383

      3 9 HP
       
    • zyzzyx

      zyzzyx FBBO Gold Member FBBO Gold Member

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      225271_5c80a68c9e_low_res.jpg
       
    • Nevada dan

      Nevada dan Well-Known Member

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      seeing how faint those numbers are I'm going to have to look again they could have been buried in paint when they rebuilt it
       
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      • 68GTX4SPEED

        68GTX4SPEED Well-Known Member

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        Didn't they just stamp HP engines 1968?
         
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        • 1968rt

          1968rt Well-Known Member

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          The sixth digit would be an "S" if it were an HP engine (at least 440s). I agree with 68GTX4SPEED only HP engines were stamped on bell housing flange
           
        • 69Coronetrt

          69Coronetrt Well-Known Member

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          That seems to be there prevailing wisdom but I don't know if credible research has been done. It could be that HP engines were issued in cars from plants that just so happened to stamp VINs.

          IF that thinking is true, then one should never find a /6, 318, 383-2 or low power 383-4 or 440 with a VIN. That means, virtually, no A or C body would have a VIN stamp. Only Charger R/Ts would have one. To me that strains credibility a little and defies logic. Finding even one of these engines stamped would start to put a chink in that thinking. If the intent was to help prevent chop shop thefts, why only stamp HP cars and not protect the entire line? Why try to make a line worker think about what assembly the car had before stamping the VIN instead of simply stamping all cars?

          Research continues....
           
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