Pressurized cooling system on a 1939 120

Posted by Russell Harmon On 2018/10/5 10:18:32

I'm trying to find some information about pressurized cooling systems.

1. What year did Packard go to a pressurized system?

2. Can I pressurize my system? I have a re-cored radiator and a new reproduction water pump, the main thing I'm worried about is the seal of the water pump. The main reason why I want to pressurize my system is for when the car is sitting in traffic.

3. Would I benefit from pressurizing my system based on the above information?

Also I'm in the process of fully rebuilding my engine, I had the block and head acid dipped so rust/corrosion causing an issue in the cooling system is not a factor

All responses appreciated, thank you very much.