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sbc head date codes

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  • sbc head date codes

    I am in the process of pulling my old heads of the car. They are 186 castings, but I want to know how to read the date codes. Here they are and they are different.



    BS'er formally known as Rebeldryver

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  • #2
    Re: sbc head date codes



    Great site for block, head and intake codes.

    Nik

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    • #3
      Re: sbc head date codes

      Originally posted by Nik
      Thanks, I check it out.
      BS'er formally known as Rebeldryver

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      • #4
        Re: sbc head date codes

        J 7 8 and J 16 8 would be from October 7th and 16th 1968 (or 1978 or 1958 or whatever decade is appropriate)
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        • #5
          Re: sbc head date codes

          Originally posted by squirrel
          J 7 8 and J 16 8 would be from October 7th and 16th 1968 (or 1978 or 1958 or whatever decade is appropriate)

          Thanks. Most likely 68 because GM only made these heads for two years. 69-70.
          BS'er formally known as Rebeldryver

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          • #6
            Re: sbc head date codes

            While messing around under the hood today I finally decided to see exactly what my engine block came from. I've had this block for 12 years and never bothered to find out what exactly I had.

            casting number: 3956618
            According to info this block was made only in 1969. It could be a 302, 327, 350 block. Gee, that narrows it down. I know for sure it's a four bolt main from when I changed the oil pump.

            The code on the front is this: T06I2HB

            T= Tonawanda
            06= could be day or month, I'm getting both
            I= could be month
            2= haven't a clue
            HB= 1969 350, auto trans, 300 HP, 4 bolt main, A,F, or X body. What's an X body in 69?

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            • #7
              Re: sbc head date codes

              Originally posted by Rebeldryver
              What's an X body in 69?
              The only one in '69 would have been the Nova. The Ventura didn't come around until '71 and the Omega and Apollo were '73, I think. There were some others in the later '70s and even some FWDs in the '80s. But the '69 would have to be a Nova.

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              • #8
                Re: sbc head date codes

                Originally posted by Rebeldryver
                T= Tonawanda
                06= could be day or month, I'm getting both
                I= could be month
                2= haven't a clue
                HB= 1969 350, auto trans, 300 HP, 4 bolt main, A,F, or X body. What's an X body in 69?
                T tonawonda
                06 june
                12 12th day of June
                HB is a 300 hp 350 with 3 speed auto trans

                My fabulous web page

                "If it don't go, chrome it!" --Stroker McGurk

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                • #9
                  Re: sbc head date codes

                  x is nova

                  david

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                  • #10
                    Re: sbc head date codes

                    Yeah, I knew the Nova was an X body starting 75-79, but I wasn't sure if it was one back in 69. But then again, I've never owned one. Too many B bodies in my life.
                    BS'er formally known as Rebeldryver

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                    • #11
                      Re: sbc head date codes

                      Originally posted by Rebeldryver
                      While messing around under the hood today I finally decided to see exactly what my engine block came from. I've had this block for 12 years and never bothered to find out what exactly I had.

                      casting number: 3956618
                      According to info this block was made only in 1969. It could be a 302, 327, 350 block. Gee, that narrows it down. I know for sure it's a four bolt main from when I changed the oil pump.

                      The code on the front is this: T06I2HB

                      T= Tonawanda
                      06= could be day or month, I'm getting both
                      I= could be month
                      2= haven't a clue
                      HB= 1969 350, auto trans, 300 HP, 4 bolt main, A,F, or X body. What's an X body in 69?

                      A friend of mine recently picked one of these up.could be 1 of 3 it also is a 350

                      8)

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