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- - Stock Fan Clutch Info. Needed (https://67-72chevytrucks.com/vboard/showthread.php?t=320455)

Rack Man

12-24-2008 03:41 AM

Stock Fan Clutch Info. Needed

Got a couple questions regarding stock fan clutches...

1. Did all our trucks come stock w/fan clutches...or maybe just AC trucks?
2. What diameter fan & how many blades is recommended for an AC truck w/stock shroud?

I will be putting in a Vintage Air system and just realized that the fan I just sent to the powder-coaters is probably not gonna work....as it is a clutchless type....

Thanks in advance!

Dan

El Jay

12-24-2008 04:27 AM

Re: Stock Fan Clutch Info. Needed

My '72 GMC, 402, with A/C has a clutch fan.

The fan is approximately 18" in diameter, with 6 blades, in a factory shroud.

I'm afraid I can't do much better than that right now. It's dark, after midnight, I was reading the tape measure while holding a flashlight, & it's sprinkling (fortunately, not raining).

If I can help you later on, after sunrise, just give me a holler & I'll go back & better look @ things for you.

Andy4639

12-24-2008 10:20 AM

Re: Stock Fan Clutch Info. Needed

A/C trucks all came with the clutch fans. Mine is a 7 blade that measures 17.5" across from blade tip to tip.
Make sure the blades aren't bent at all or you will be buying water pumps on a regular bases.

msgross

12-24-2008 10:32 AM

Re: Stock Fan Clutch Info. Needed

I have one that might work for you...

Stocker

12-24-2008 10:46 AM

Re: Stock Fan Clutch Info. Needed

My '72 w/factory air has a 7-blade fan.... iirc, it's about 18" diameter. I'll try to remember to check it after the sun comes up, if there's not too much snow on the hood...

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