Turning torque for engine

Ant said

Is the radiator cap venting?

Also, run it with the cap off and see if it becomes a volcano. It may just purge more air out with a little mess and then be fine. Be careful, hot coolant hurts. After that, put the cap back on and see it it gets too hot.

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I’ve run the engine with the cap off to watch the coolant flow. No real issues . The hoses get pretty hard like pressure build up . Thought maybe head gasket but chemical tests came out negative. I’ve tried different caps . No change. I have always felt the hoses got Way too hard.