Got the carb leaned out a little, swapped the vaccum advance to a vacuum port rather than a timed port, runs super now, but in 4 miles the temp climbed to 200+. Note - Temp here was 97 degrees.
I am suspecting the thermostat is a 190. Thinking of going to a 160. Motor is a 400, Holley 750, Hooker Headers, Crane Cam. Regular Mech fan, with a shroud, and a single Elec Fan.