[Keith Seymore]

Here's why I asked about axle ratio.

These are the charts from Eric's book detailing the radiator releases for 1964 and 1965, respectively.





For '64 it looks to me like a pretty clear split between manual and auto applications.

For '65 you can see the "smaller" radiators did distinguish between auto and manual, but the heaviest duty radiator was used for both.

It's typically based on the business case comprehending the anticipated volume and trade offs relative to piece cost and tooling and added logistics of creating and maintaining another part number. The program team would make the call. It's analogous to the decision as to whether to proliferate a wire harness based on content, or give away content (extra wires and connectors) to avoid proliferating parts.

As you might expect the radiator is called out specifically on the build sheet and, in my case, the code is stenciled on the radiator and everything matches up.











K