I run a 180 thermostat now, before I couldn't run a 180 had a 160 in her. My temps with the 160 would be around 200 to 220, then I did the water pump mod and it helped out, I also found my after market cam needed to be advanced to 10 deg and now with the 180 thermostat it stays at around 180 to 200. the mod helped out.
I was running the cam at stock timing too 6 deg.