Overheating issues with remanufactured 360

ir3333 said
a solid factory 6 blade will cool better than a clutch fan.
a clutch fan is designed to slip and use less hp so turns less than crank speed.However they are adequate for some builds.

A thermal clutch slips when engine is cool. Once the thermal spring expands the clutch engages and turns at engine speed.

Viscous fan clutch and thermal clutch is not the same.