Quote:
Originally Posted by gto65racer
I need help identifying if this radiator is a 1969 Nova big block. I think the curved neck has been replaced but I am not sure about the tank codes. The left tank is IL and the right is ON.
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gto65racer,
As Tom mentioned;
IL was used on 68-70 Nova's for the left tank. (and 67-69 Camaro straight neck)
OO was used on Manual trans for right tank. (and 69 Camaro)
CH was used on Automatic trans for right tank. (and 69 Camaro)
The tank tag with the part number and whole radiator code would really help.
My research is light on 1968 Big Block Chevy II since there were low production numbers.
Based on the CRG Radiator report:
OL was used on 67-68 Camaro BB Manual
OM was used on the 67-68 Camaro BB Auto
ON not listed (But appears to be BB Auto)
OO was used on the 69 Camaro BB Manual
Thinking about the way part codes were issued. ON is in the BB Camaro group. It could be possible that ON was used and later replaced by CH. Or it might have a smaller size trans cooler. Or a 68 Chevy II code. The month "F" is June and BB Chevy IIs were in production by then. All of this is just conjecture.
Then again remember that these tanks were used also used on BOP models and Trucks.
Check the core size from here:
http://chevynova.org/1969NovaRadiatorCodes.html
Greg