Model A Radiator--Y Block Ford

Radiator

 

pressurized system vs. non pressurized system?

 

Yup presurized y-block, try a 4lb cap. Don't do anymore or it will crack the A radiator. If that doesn't work you might have to save and buy a mustang radiator from parts store.

 

The cap is just the stocker no vent no pressure just a threaded cap.
Never has never will work?

 

Change of radiators in order?

 

yes---