71 Corvette fan question

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Dec 17, 2014 | 03:15 PM

HT1663WB

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Melting Slicks

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From: Clayton New Jersey

71 Corvette fan question

So, I installed an aluminum radiator in my 71. I also replaced the fan shroud (original was cracked and was being held back with zip ties). The problem now is the clutch fan will not fit with the new shroud...what gives? The shroud is identical to the factory...any help would be appreciated. What size fan should be in the 71?

Thanks, Bill

Dec 17, 2014 | 03:55 PM

Alan 71

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From: Westminster Maryland

Hi Bill,
I believe the size of the fan depends on whether the car is a sb or bb, and also whether it has a/c or not. Whether a car has a/c or not influences the number of blades too. 5 blades without a/c, 7 blades with a/c.
The fan on a sb without a/c is 18" in diameter.
Regards,
Alan

Last edited by Alan 71; Dec 17, 2014 at 03:57 PM.

Dec 17, 2014 | 05:32 PM

HT1663WB

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Melting Slicks

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From: Clayton New Jersey

Thanks Alan. It's a small block, no air conditioning. It is the 5 blade fan and it is 18". Motor is not the original, could it have the wrong water pump?

Dec 17, 2014 | 05:35 PM

Mike Ward

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Why won't it fit? Too high/low/forward/aft?

Dec 17, 2014 | 05:38 PM

Alan 71

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From: Westminster Maryland

Hi Bill,
I'll ask the same questions as Mike did.
Regards,
Alan

Dec 17, 2014 | 05:50 PM

HT1663WB

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Melting Slicks

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From: Clayton New Jersey

Quote:

Originally Posted by Mike Ward

Why won't it fit? Too high/low/forward/aft?

Alan and Mike,

It's to high. The shroud has the same part number as the one I took out. The radiator is the same size as the original.

Last edited by HT1663WB; Dec 17, 2014 at 05:53 PM.

Dec 18, 2014 | 11:03 AM

Mike Ward

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If the rad is seated properly, then your motor mounts might be too low.

Dec 18, 2014 | 11:04 PM

thb72

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From: Carmichael California

I read your post as the fan is to high. Agree with Mike though about motor mounts. I just replaced the swollen, separated mounts on the 72 and could see the clearance difference between the top of the fan and the shroud.