New to site, new to Mopar overheating issues

I'll join the fray. My advice to the OP is approach this systematically. Regardless it needs a good clutch fan and shroud. Verify that it is actually getting hot, if it is I'd drain and flush the cooling system. If the radiator is gunked up have it boiled and rodded. If the cap is suspect replace it and as other have mentioned a good high flow thermostat. Verify it has the correct 8 vane water pump on it.

IMHO if the pulley ratio makes or breaks the cooling system your system isn't sufficient and this is why I say that. My 434" small block is cooled with a FlowKooler water pump, a generic two core aluminum radiator from a local roundy round speed shop and a Stant Superstat 160° high flow thermostat. A MP viscous fan kit with a factory shroud that I cut down to fit. For the pulleys, the crank pulley is only 5" driving a 7.25" pulley on the water pump.

Last Friday I drove it to my front end guy to have it aligned, it was in the mid 90's and the hottest it got was 175°. I run some heads up street car stuff and at one track they hot lap us and you cant shut the car off or you are disqualified. After three or four rounds it'll be 180°.

Tell me again why I need to overdrive my water pump.