overheating

I got a rebuilt 302 off of Facebook marketplace. It’s my first engine swap and I swapped it into a ford ranger. Ever since I wired everything up and finally got it running and idling it’s been overheating. It runs and after about 5-7 minutes it gets up to 180 and then continuously goes higher...

So the time has come to change the radiator for my Galaxie, it's a '65 with a 289 2bbl in it, should I swap it for another, rebuild the current one or go to a bigger one since I live in the desert? Any valuable advice is much appreciated in advance. Key info- I eventually plan on still...

I have a 69 Marauder X-100 with a 360 HP 429. On the highway @ 75 mph (3,000 RPM) the temperture heats up to 210. Is this overheating or normal for a 429. I have been told both??? Any help would be apreciated... Ed