Installation of Aftermarket Fan Clutch on a 1960

[Joe M.]

I installed an original 5 blade fan unit on a Hayden fan clutch this morning. The shaft on the aftermarket fan clutch is approximately 3/4" shorter than the spacer I removed with the 4 blade unit. I assume that the 5th blade will make up the difference in air volume since the fan does not extend into the shroud as deep as it originally did. I read several archive posts about increased wind noise with a 5 blade unit. I could not detect any change in noise caused by the 5 blade unit. When I shut off the engine, the fan blades rotated 1/4 turn and stopped.

[Terry D.]

Re: Installation of Aftermarket Fan Clutch on a 1960

Joe
The fan should be half way into the shroud for max cooler. Most speed shops sell spacers.
Terry

[Joe M.]

Re: Installation of Aftermarket Fan Clutch on a 1960

Given the location of the stabilizer rod, the fan can't be half way into the shroud. The aftermarket fan clutch is only 3/4" shorter than the original 4 blade with 1-15/16" spacer. If the 3/4" difference creates a cooling problem, I will go back to the 4 blade with original spacer or keep the 5 blade and connect it to a fan clutch eliminator.

[Terry D.]

Re: Installation of Aftermarket Fan Clutch on a 1960

Joe
By half way I mean half of the blade is outside the edge of the shroud, half is in, not half way to the radiator. I went with a 7 blade on my 62 to keep the 383 running cooler and it helped.
Terry

[Joe M.]

Re: Installation of Aftermarket Fan Clutch on a 1960

OK, now it makes sense. I am going to assume, until proven wrong when the weather is hot, that the 3/4" I lost when I removed the original spacer will not significantly affect the cooling ability.