Tried and true big block radiator/electric fan setups!

MP suggests 3/4" clearance from the radiator to the clutch. I've seen some posts where folks said they had 1/2" clearance and ate their 3rd core. Others have never had an issue.

Clutch fan, shroud and 180 thermostat
^^^ IMO, This if you have the space.

albeit I have this...........
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