I have now done three rounds of evapo rust flushing.... Last round the water came out pretty clean and little to no debris in the filter. Filled it up with plain water let it run and get warm, let it cool, drained that it was also pretty clear with no debris in the filter. Repeated one more plain water rinse and now flushing with blue devil flush. Car has been running for 30 minutes in the driveway and the needle is staying exactly at the n on the temperature gauge. Still running no thermostat. Temp readings are:
Water neck: 180
Temp sender area: 159
Front of heads in front of 1st intake port: 190s
Front of engine block: 160
Intake near carb base: 132 very front or rear: 180s
Exhaust manifold at each exhaust port 279-290
Not sure I can get my little laser pointer thermometer to point at anything else. .... Thoughts?