Engine Driven Fan?

no AC, 17" IIRC, 7 blades, fixed no thermal clutch

remember that cooling is more than number of blades and diameter. Pitch is huge!

also the pulley diameters, the radiator, etc.

Found an old photo. Looks like the leading edge of the fan is closer to 1.5 inches to the rad.

View attachment 1715828332

actually that looks like a 213 fan, 1.75 pitch which was the least pitch of the 7 blade fans. The greatest pitch 7 blade fan was 2.5 pitch.