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Where are Numbers located on 1981 Corvette Engine?

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Old Jun 22, 2017 | 03:37 PM
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Default Where are Numbers located on 1981 Corvette Engine?

Hi,

I'm familiar with where the numbers are on a motor on the 1960s and 1970s vettes. But I recently bought a 1981 and want to check if the numbers match, but I can't find where the numbers are located. I found this photo on the site saying it is the numbers on the motor of a 1981 vette, but I can't find that same pad with the numbers on my motor, but I'm not sure if I'm looking at the right place. Could anyone be more specific about where those numbers are located on my motor?

Thanks!

Phil


Last edited by berkleephill; Jun 22, 2017 at 03:39 PM.
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Old Jun 22, 2017 | 04:02 PM
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engine pad front of engine passenger side even though the picture looks like drivers side
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Old Jun 22, 2017 | 06:57 PM
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Thanks so much Alan. I found that photo online (from this site) where someone was just mentioning their '81 was numbers matching. I just can't seem to find numbers like those on my motor and was hoping someone might know where I can look to find them. Thanks again!

Originally Posted by Alan 71
Hi Phil,
That's them!
V is the Flint engine plant
0904 is the date when the engine was assembled.
ZDD is the suffix code….1981, 350 cu.in, 190 hp, 4 barrel, m/t.
The other number is the sequence number of the vehicle the engine was first installed in.
Regards,
Alan
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Old Jun 22, 2017 | 07:02 PM
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Hi b,
The shape of the pad changed but not the location (as far as I know!)
Regards,
Alan

Added: I just looked at the 81 AIM and UPC 6, Sheet 2, indicates the pad is still in front of the right side head.


Last edited by Alan 71; Jun 22, 2017 at 07:44 PM.
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Old Jun 23, 2017 | 10:21 AM
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If your VIN # is not on that pad it's NOT the original motor. The build date & vin # are only stamped on the pass. side pad. Cast in #'S are casting # & cast date.
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Old Jun 23, 2017 | 10:24 AM
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Perfect, just found it. Thanks!

Originally Posted by Alan 71
Hi b,
The shape of the pad changed but not the location (as far as I know!)
Regards,
Alan

Added: I just looked at the 81 AIM and UPC 6, Sheet 2, indicates the pad is still in front of the right side head.

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