So… it doesn’t seem like it was the thermostat. I bought a new gates, and pulled the old one, and put them both in a pan of water and started to heat them. They both started opening at about the same time. They new one started out with the foot longer and it continued that advantage throughout the temp range.
I also installed the new housing, as the old one was corroded.
Put it all back together and while it seems better, the temp still is climbing past the L and approaching the red…
I’ve tested the system for leaks and when cold it holds 7 pounds.
Also tested for combustion fumes in the radiator and got a negative result.
Sounds like maybe it’s time to pull the radiator?
I’ve got new: hoses, 50/50 coolant, blades for the round fan motors, thermostat, thermostat housing, Water Wetter, swapped distributors to sure of timing and advance, and it seems it’s running a bit on the rich side to make sure I’m not running lean…
**Fans come on when they are supposed to, and never turn off as long as the car is running. The temp never seems to drop, only continues to climb. **
I’m out of ideas, and am tired of this problem that just won’t get better, regardless of how much time I put into it.