70duster 360 gets hotter the faster i go

I just wrote a huge story and its gone!! Involves racing a 392 srt8 charger, then a street bike, and it still got hot!! Lol
The quick facts, i dont wanna write that story again (im on this with my phone)
But i ran it down the highway at 60mph for about 10 miles, it was cold, mayb 60deg... And i kno, 60 is deff not a "run down the highway" hahaha

Pulled off the highway temp was reading 215-220 on gauge under dash...
Pop the hood, and turn on fans (cuz this is gettin hot for me) temp at t stat was 200-210 all the way to top of radiator... The core was about 180ish, and bottom tank and hose were around 160... But pump was 175! Not pumpin right?
I rev it up checking lower hose, its not suckin in, u can feel water moveing around, but not sucking hose to spring or anything....so i pop rad cap (it has lever on top) rev it up and it moves water! White rushing water (temp is about 180 on top of radiator now)

I think my water pump sucks,, its moveing water but with that gap behind the impeller who knows where the water is goin!....and shudnt that pump be as cold as the water coming in?? Not 10-15 deg hotter? Whats goin on behind that pump??