Re: '47 356 modern thermostat

Posted by jfrom@kanter On 2018/9/14 9:57:35

There are two basic sizes for pre '70 US cars, small 2 1/8" approx and large 2 1/2" approx. All Packards 35-56 that have a cyl head t-stat use 2 1/8" except 40-50 356" which uses the large 2 1/2"

As far as the older diaphragm type restricting the flow and causing overheating, keep in mind that before the modern pellet type was invented, all cars used the former type. With 20-30 million cars on the road with the diaphragm type there were not masses of overheating cars caused by the thermostat and for sure there was no recall.

Thanks
James From
Kanter Auto Products