Big block cooling issues

Lord Sparky said
So how do you install a one piece radiator shroud? The space between the radiator and blades is about 1/2 inch. I doubt I could get the fan off bolts out, then back in. Does the shroud bend? Mancini Racing Radiator Fan Shroud

View attachment 1715661515

That fan is probably too close to the radiator anyway. The fan will need to sit so that it's about 1" inside the outer lip of the fan shroud. Remove the fan and spacer, mock up the radiator shroud, determine how much fan spacer you need to locate the fan a 1/2" to 1" inside the shroud if possible, then remove the shroud from the radiator and hang it off the pulley. Install the fan and proper spacer (if a spacer is even necessary), then slide the shroud back over the fan and up to the radiator and bolt it on.

And the good news is that your heating at idle situation will likely improve quite a bit with a good fan shroud.

DrCharles said
Can't you get more clearance without that 2" spacer?

Yeah exactly!