Heater not heating up cab is a 160degree thermostat my problem?

[72farmer]

I installed a Oldair Heater,A/C kit in my 67 last year.I don't remember if i had heat last year or not.I went to use the heater last week and it never did get warm. I had never looked to see if i even had a thermostat and thought that could be the problem.I drained radiator down below gooseneck and pulled it off and it had a 160 degree thermostat.Is this the correct temp thermostat.