New cooling system, still overheating.

belts are not routed correctly for one . Are you sure you have the correct rotation fan and pump combo. They make two different directions for serpatine belt cars. Just a thought. My friend had the wrong fan . it would only heat up when the hood was closed when you were moving. Sat there with the hood open for an hour ran cool. Noticed it when I told him to tap the key to check the fan clutch. Ya never know.

I've ran the belts this way for years. Old ratty radiator, no problem. Then the fins on that finally goes out and I get an aluminum radiator and 8 months later, problems.
Plus, I see no other way to route the belts.

Pump fins turn the correct way.
I googled around and learned about marine pumps turning the opposite direction so I made sure.
Fans and fan clutch work correctly. Stick a plastic bag to the front of the radiator and it sticks

Good news is, it did not puke coolant or overheat on the way home today.
maybe because it was only 81 instead of 95 outside.

I will get better pics of the belts setup and search through my online pic folder for older belt setup pics to make sure the belts haven't changed.

The only thing this is doing is pushing me closer to a 408 build or 2009+ Hemi swap faster.
I wanted to upgrade, just not before summer. I'd rather do some heads in a weekend than have my truck down for a week because of a swap.

here's an old pic from Jan 2012 with the setup the way it has been forever:

https://lh4.googleusercontent.com/-.../AAAAAAAAAy8/YkNFsCAUGqA/s615/my_engine_2.jpg