Figuring the Right Engine Date - Impala Tech
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post #1 of 5 (permalink) Old 11-03-2010, 11:24 PM Thread Starter
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Figuring the Right Engine Date

I am trying to come up with a plausible date for my engine date stampings on my 64 Impala. I seem to recall they pre-date the finished car by 2-3 months, but I am not positive on that.

On the car's Trim Tag, I have a Body Build Date of:
1D
1=January D=4th week

How much before the actual finished car were the Body Build Dates? Or to put it another way, what should the engine date be in relation to the Body Build Date? Also, would the 327/300 have a partial VIN stamped on the engine's stamp pad? I seem to recall the partial VINs were put on high performance motors by 64.






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post #2 of 5 (permalink) Old 11-03-2010, 11:47 PM
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David
Not all 327/300's were stamped with the partial VIN, I think it varied by assembly plant. Luckily my Arlington TX built 64 was. Both of my original engine cars are much closer than the 2-3 Month range. Here is my 64's dates for reference.

My 64 327/300 HP was assembled on June 2nd 1964 and my car is a 06D (4th week of June) so my engine pre-dates my car by about 3 weeks.

64 Impala SS 327/300 survivor
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post #3 of 5 (permalink) Old 11-04-2010, 05:42 AM
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It was usually 7-10 days between a cast date and the tme the finished machined part was bolted into the assembled car for motors trannies and rear ends. Since most rear ends were made in the East it might be 14 days before a rear end was installed in a CA car.

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post #4 of 5 (permalink) Old 11-04-2010, 12:38 PM Thread Starter
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Thanks, that helps a lot. Particularly your example, as it means I can mark my block as early January ’64 and have it go with a late Jan ’64 body date.



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post #5 of 5 (permalink) Old 11-04-2010, 01:35 PM
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As I have seen, all 300HP engine blocks were stamped with a vin if it was originally installed in a car. The only ones that would not be were service replacements.

Warren
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