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Deck plate stamps: D383 (says it's a 1968 383ci); 12162 - this does mean the 2nd block assembled on 12/16, correct?



The last 2 means it was assembled on the 2nd (day) shift on December 16, 1967

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Head casting numbers: 2843906-1 and 2843906-6. What do the -1 and -6 mean?



The dash numbers following the basic casting numbers refer to the casting core used to make the sand molds the heads are cast in. Same for block dash numbers.


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Also on a tag near the casting numbers: 01608 (on the -1 head) and 0160B (on the -6 head).



Those are the casting dates.


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On the underside of the engine, near where the starter mounts, I found this number: PT383P23321129.



PT= Plant Trenton
383= Displacement
P= Premium fuel needed
2332= Build date December 16, 1967
1129= 1129th unit built that day


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I expected to find a VIN there, but I can't figure this one out.



The '68 partial VIN is often stamped in the top of the block where the bellhousing mates to the block.

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Can someone tell me where to even look for casting/identification numbers?



The transmission part number and build date are stamped in the drivers side pan rail.

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