67 Dart cooling issues

I agreed that I had an airflow problem, so I dug through my old stuff and found a 7 blade paddle fan. I don't have a clutch and I don't have a spacer. As it is I barely have room to get my wrench in to tighten the bolts. I pulled the electric fan off and swapped on the 7 blade paddle fan. The fan sits about 2.5" back from the radiator. I don't have a shroud, but this should tell me if I am going in the right direction.

The temp outside was down to 80 F when I ran my test lap. The lap consists of street driving with some stop and go, a highway section about 3 miles long where I run 55- 60 MPH, and some slower sections with speeds down to 20 MPH.

Previously (with the electric fan) the car stayed below 185 until I hit the highway and then it climbed quickly up to 210+. It then held the 210 all the way back to the garage. It didn't cool down at all in the slow speed portion.

After bolting on the 7 blade paddle fan with no shroud, I fired up the car to find the temperature gauge already sitting on 185. I drove about 1.5 miles and jumped on the highway section. To my surprise the temperature held at 185. As long as the car was moving the temperature never got above 190 on the slow 20 MPH sections. At stop lights the temperature would climb to 195, but drop back down to 185 as soon as the car was moving.

I want to thank everyone for their input. Now I need to get a fan shroud. Where can I get a decent shroud for a 22" radiator at a decent price?
Thanks,