I feel like I'm hogging all of "Shop Talk" lately, but I am trying to get a bunch of issues resolved. 1987 L98 350 TPI, bored .030" over with stock heads and a 180° stat. Cam is a Chevy experimental with .603" lift and that's all I know about the cam. When driving on the road temp in this current 60° to 70° ambient the gauge stays in the 150-160° range. When I stop or start a climb it'll get up to temp. I've tried other thermostats with no substantial change. Suggestions? I'm hesitant to plug the bypass hole in the thermostat.