Harrison Radiator Question

[69L89396]

This is very interesting. I would not dought the date coding.

From what I can tell, the letters on the raised portion of the tanks denotes the tank size for the core size, core length and whether it is for an automatic or 4 speed application. It is hard to get the absolute correct information just by looking because you don't know if some time in the radiator's history the core has been changed.

If these are really date coded, I wonder how far ahead they made them of the car build date. I would think they would be fairly close considering how many cars were being built.

[1969L78Nova]

For what its worth the markings on my 1969 L78 Nova (4 speed) Harrison radiator are: "O" "M"(recessed)"O" . I therefore doubt the "M" designates a date code. Looking forward to other responses as to what these codes mean!

[69L89396]

There may be a letter or two that wasn't used.

Check out this link from the same subject over at the Team Camero website. Does anyone know about the other tag that was found?

http://home.pcmagic.net/bertfam/misc.htm

[Kurt S]

M is December for half of GM parts. What's the date of your car?

On that tag, didn't realize it was in the airflow. I think rebuild......

[1969L78Nova]

Kurt
Its a March 69 built car.

Martin M.

[Stefano]

Does your "M" look like the "E" that is posted? It would be correct for a March built Car.

[1969L78Nova]

Stefano
It's definitely an "M"

Martin

[69L89396]

Over at the Team Camaro site it was brought up that the application tag also has the letters of the tanks.

Does anyone have the information on all the application tags that includes the letters of the tanks to verify this?

As for the date coding, are both tanks date coded or just the fill tank?

[RonNova396L34]

69L78Nova
One question, do you know for certain if your radiator or tanks are the original units?
Ron