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Water pump date question

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Old Sep 25, 2016 | 10:18 PM
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Default Water pump date question

Can anyone identify this water pump as to date...
C2 Appears to be:330813 But hard to read
GM
6072

Guy is telling me its from a 1978...but my understanding is to read the date as such

First letter month , next two numbers day,last number year
Example : D 20 8 would be April 20, 1978
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Last edited by Indigoblue; Sep 25, 2016 at 10:22 PM.
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Old Sep 26, 2016 | 08:39 AM
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Hi I,
330813 indicates a water pump casting that was used on Corvettes from late 72-82.
I'm sorry but I'm not familiar with the casting date in that style… I too would expect to see a letter for the month and digits for the day and year.
Perhaps someone more familiar with later water pumps can clarify the date casting.
Sorry!
Regards,
Alan
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Old Sep 26, 2016 | 09:08 AM
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Originally Posted by Indigoblue
...Guy is telling me its from a 1978...
FWIW: 78 engines (including water pumps) were painted GM corporate blue. I don't see any vestiges of blue on the pump in the pics.

Last edited by Easy Mike; Sep 26, 2016 at 09:10 AM.
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Old Oct 2, 2016 | 01:45 AM
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