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#1
06-12-2025, 08:24 PM
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1968 radiator tank codes
Can’t find code NO any info on tanks codes? Thanks
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#2
06-12-2025, 09:38 PM
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Should be a radiator chart in the service manual under the engine cooling chapter. Codes are listed there IIRC.
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2015 Chevy Express  2024 Cadillac LYRIQ 
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#3
06-13-2025, 12:45 AM
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Quote:
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#4
06-13-2025, 11:35 AM
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Quote:
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#5
06-13-2025, 11:47 AM
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Not sure if this is what you're looking for...
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2015 Chevy Express 2024 Cadillac LYRIQ
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#6
06-13-2025, 01:50 PM
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Quote:
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#7
03-12-2026, 07:51 PM
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I can’t find it at all anybody ever see one with NO code?
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#8
03-12-2026, 11:05 PM
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That would be an ON code. I did a quick search and all I found was a Camaro forum question regarding an ON tank code found on a 68 Camaro. No one there knew what it was either.
Possible replacement radiator?
__________________
Ed 1968 GTO (Thanks Mom) 2006 Silverado 2015 Chevy Express 2024 Cadillac LYRIQ
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#9
03-12-2026, 11:31 PM
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The ON or NO is the tank code while the codes in the list posted is the assembled radiator codes. I have never seen a chart with the tank codes.
The codes (Camaro perspective) are explained by the CRG at https://www.camaros.org/coolingsystems.shtml#usage I believe my '68 has the original UP code (400 w/AT) Harrison. It also has the ON/NO tank code. Was the ON used for other radiator assemblies? I don't know. Perhaps a good old radiator shop would have a Harrisom parts cross reference book??? I had my original radiator recored in '78, 86, and 11. The UP code tag/plate was missing so I had one added in 2011 during the restoration. |
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#10
03-13-2026, 11:14 AM
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The IL and ON tanks were used on the '68 or "69 UP radiator.
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So long, farewell. |
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