Check Six,
So did you put the smaller pulley on or not? Was it the one suggested from the Fairmont? Also, did you block the horn holes? These two things were good for at least 20 degrees in combination.
Remember, blocking the horn holes is advantageous on the highway as well. The shroud is something you should really pursue. That Taurus shroud I told you about will work with the fan you got. It will need to be modified by cutting and adding some sheet metal with pop rivets, but you’ll be able to figure it out. Your looking at some major improvement here as well. When we did our tests with the horn holes and smaller pulley, we had a shroud in place. I’m not sure if you’ll see the same improvement without it.
Increasing the pitch on your fan blades is easy and good for still more improvement. Get it where you can with what you’ve got. I told you before that the Fluidine radiator was one of the poorest performers in our tests.
Keep going on this and keep us posted.