[67FEfastback]

A couple more steps tonight.

I drained an amount of coolant. I am going to replace it with water to get the mix closer to 50/50 (that should get me very close)

While I was at it, I removed the thermostat and drilled the three small holes in the top. At the very least that should help purge the system.

I am going to check the timing and look at the vacuum and mechanical advance as well

Water pump is edelbrock standard rotation. The heating up of the car is steady in traffic. Once it moves (air flow) it starts to cool back to normal. When I step through the gears it heats up fast, then goes back to normal if I back off (after a short while)

If the weather is decent again this coming weekend, I'll test it out again.