Flex fan

I prefer the old stand by of factory fixed fan. Mounts to a spacer on the front of the water pump. Spacers come in diferent lengths. Factory fixed fans come in diferent pitches, diameters, number of blades and fin design.

Was looking at 68 parts book and they had 1.5 to 2.25 pitch listed. All for dart baracuda valient, 273 up to 383