Radiator tips for 67 Dart with 440

4geardemon said
. Highway he gets himself around somewhat ok. For example a 20 mile drive via highway with a couple stop signs

4geardemon said
Knowing the car a little bit. This Rad setup does not allow room for a mechanical fan unfortunately. He has tried. It has two smaller (10"??) electric fans with unknown cfm rating

Sounds like something other than fan If it gets hot at cruising speed

If there is a shroud up against the rad and it only has 2 x 10" dia holes in it

Rad area
22x17 core = 374 sqin

Fan hole area
Pi x R^2 = Area
Dia / 2 = radius
10" dia / 2 = 5" radius
5^2=25

3.1415 x (25) = 78.54 sqin per hole

2 holes = 157 sq in.

That's a lot of blocked radiator it cruising speed.