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1970 w/454 AC Compressor Code No.

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Old Jan 20, 2021 | 08:31 PM
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Default 1970 w/454 AC Compressor Code No.

I have a 1970 barn find. The paperwork from the original owner shows lots of AC repair bills in the 3 years before he parked it in 1973. It is an original AC car. I cannot figure out the CODE NO. on the label. The model no. is correct. Is it a GM replacement?

My car is a July 14, 1970 build.


Code no: 501102???
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Old Jan 20, 2021 | 08:39 PM
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Thats what I see!!! Ike
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Old Jan 20, 2021 | 08:46 PM
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Originally Posted by Kwbunyap
I have a 1970 barn find. The paperwork from the original owner shows lots of AC repair bills in the 3 years before he parked it in 1973. It is an original AC car. I cannot figure out the CODE NO. on the label. The model no. is correct. Is it a GM replacement?

My car is a July 14, 1970 build.


Code no: 501102???
What does this code mean? 11 would the day, 0 is for '70, and shift 2. But 50 doesn't correspond to a month. Maybe was supposed to be 05?
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Old Jan 20, 2021 | 10:47 PM
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That's not a date code.
Have you looked at the back of the compressor for a stamped code starting with a letter.

Last edited by MelWff; Jan 20, 2021 at 11:02 PM.
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Old Jan 20, 2021 | 10:48 PM
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Originally Posted by MelWff
That's not a date code.
do you know what it is then? It's supposed to be a date code.
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Old Jan 20, 2021 | 11:03 PM
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Did you look at the back for a code starting with a letter?
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Old Jan 20, 2021 | 11:41 PM
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Any Pics of your 70 you can post ?
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Old Jan 21, 2021 | 02:28 PM
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The after market sells replacement labels with that field blank, it is quite possible someone replaced the label and mistyped the leading 50.
There should be another stamped code on the compressor, not the label.
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Old Jan 21, 2021 | 09:57 PM
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Originally Posted by Kwbunyap
What does this code mean? 11 would the day, 0 is for '70, and shift 2. But 50 doesn't correspond to a month. Maybe was supposed to be 05?
according to NCRS the code IS a date code plus shift: MMDDYS. 501102= 50th month, 11th day, '70 year, 2nd shift. Now, I gotta say that 50th month seems a little questionable. More sleuthing required...
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Old Jan 21, 2021 | 10:27 PM
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This same label code appears on the NCRS forum for a June built car:
https://www.forums.ncrs.org/showthre...274#post887274
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