Stuck in traffic 340 got up to 220

I freak out myself over 200 degree coolant temperature. I'm running the original a/c 3 core radiator, fan and shroud, core support seal and cowl seal. It's a newly built 5.9, aluminum heads, headers. It runs 210 in stop and go traffic.

I took my radiator to an old school shop about a month ago to have it checked out. He said it's flowing 100%. So I put in a high flow 180* stat and run 30% antifreeze.

Today, after a nice drive I sat in the driveway idling in Drive for 15 minutes. Got to 210* and stayed there until I went to Park and increased the RPM. I guess 210* is the lowest it will run without moving.

I think we worry too much. Should probably disconnect the gauge and go cruisin' :steering: