[regamble]

Generally speaking, no matter what the vehicle, 190 is actually a pretty low temp. Your system is designed to run above the boiling temp of 212 most days, that's why the system has to be under pressure and a pressure relieved cap installed. If you're having vapor locking issues it can be caused by a failing pump, failing or softened rubber line from the pump to carb (which is why originally they all ran steel lines) or even possibly carburetor boilout.

If the car isn't overheating then the issue is quite likely in the fuel system not the cooling system.