Just to chime back in again, I can't point to the fan being 50/50 in the shroud as the magic bullet in cooling temps. I made the change when I rebuilt the engine. So I started with a clean and de-flashed block, did the water pump plate mod, have all the radiator side fillers, x panels and lower filler panel, clean 3 row radiator. What I will say is that after reading a ton about overheating problems and the fixes, I did all I could to not skip any steps. This will be my second summer with this set up on my 68 vert with a 461 and a/c. So far I have not seen it get above 185, even here in Phoenix.
Thanks for the guidance Desert. I'll probably bite the bullet and buy the longer clutch fan which will push fan into the shroud and closer to the radiator. I also plan on doing the the water pump plate mod. It will be interesting to see if I notice a temperature difference.
