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1973 Electric Fan Choices

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Old Feb 4, 2007 | 03:05 PM
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Default 1973 Electric Fan Choices

I've read the many threads regarding replacing the factory clutch fan with an electric fan on my 1973 Corvette with ZZ383 crate. One option is to use dual SPAL 11 inch fans mounted directly on the radiator. However, I'm wondering if anyone has installed like an 18 inch (BeCool, Flexolite, etc) in the approximate location that the clutch fan was located. Do these electric fans need to be mounted directly on the radiator? The quandary I find myself with is removing the radiator cowling and installing the dual 11 inch fans or is there an alternate solution. Anyone with thoughts, comments, and pictures would be greatly appreciated.
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Old Feb 4, 2007 | 03:25 PM
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Here's the best plan for a kick azz cooling system.

MarkVIII fan (18" 4000 CFM fan)
DCC variable speed controller
http://www.dccontrol.com/

That's it.
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Old Feb 4, 2007 | 04:13 PM
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I have a zz383 engine in My car too. I used a Dewitt aluminum W/spal fan. Dewitts makes direct fit and spal fan and controllers for C3's. check out his Radiators and fan kits. He Has a full catalog with pics , spec's and instructions for all app's. He's here on the forum , send Him a message.The catalog is PDF and downloadable to your desktop. Search Tom Dewitt posts and you should find the link to the Catalog.
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Old Feb 5, 2007 | 08:44 PM
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Thanks Guys, I appreciate your thoughts on the matter. Cheers.
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Old Feb 5, 2007 | 08:47 PM
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Here's a link to what Photovette did with is MarkVIII in his '77 and it's a sweet deal.
Definitely read what this guy did...starting at post #1.

http://forums.corvetteforum.com/show....php?t=1608890
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Old Feb 5, 2007 | 08:56 PM
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I used a fan & shroud assembly from a 1999 or 2000 Crown Vic police interceptor.


It fits well with some simple mods to the shroud.
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Old Feb 5, 2007 | 09:00 PM
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Hey Jay, you should get a few new pics of that fan install since the TPI intake swap.
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Old Feb 5, 2007 | 09:02 PM
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You know what's really neat about having a large powerful electric radiator fan--one that points down and back at an angle?

When I hit the emergency full power switch, it blows every leaf that the Vette tracked in back out onto the driveway.

No more sweeping the garage.
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Old Feb 5, 2007 | 09:04 PM
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Originally Posted by PhotoVette1
When I hit the emergency full power switch, it blows every leaf that the Vette tracked in back out onto the driveway.

No more sweeping the garage.

Heh heh, that blows.
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Old Feb 5, 2007 | 09:13 PM
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Originally Posted by Durango_boy
Heh heh, that blows.
NEWS FLASH: Julie just got a verified offer to shoot for Playboy.

Not only do I get 10%, she asked me to take her to dinner Valentine's Day.

And, she's only had one ride in my C3 too.

I know, out of thread--but I had to brag.

Special bonus:

Model dieting secrets revealed

julie.....[8:45 P.M.]: i cant shoot tomorrow, ive been feeling bloated lately, i think i need to eat laxatives again
julie.....[8:45 P.M.]: but last time i got sick and dehydrated

Last edited by PhotoVette1; Feb 5, 2007 at 09:18 PM.
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Old Feb 5, 2007 | 09:19 PM
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Originally Posted by PhotoVette1
NEWS FLASH: Julie just got a verified offer to shoot for Playboy.

Please for Gawd's sake, let us know which issue, and are you gonna get to go to the mansion?
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Old Feb 7, 2007 | 04:23 PM
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On my 71 I just attached a 16 inch SPAL fan to the radiator. I used some plastic screw like connections I bought from Summit.
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Old Feb 7, 2007 | 04:29 PM
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Originally Posted by Sigforty
On my 71 I just attached a 16 inch SPAL fan to the radiator. I used some plastic screw like connections I bought from Summit.

Did they go through the radiator?
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Old Feb 7, 2007 | 07:29 PM
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Originally Posted by Durango_boy
Did they go through the radiator?
Yes, you pull them through the radiator fins
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Old Feb 7, 2007 | 07:32 PM
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Originally Posted by Sigforty
Yes, you pull them through the radiator fins

Over time that could pose problems. A small fan is not a huge deal, but a medium to large style will pull and vibrate and tug against the rows of each core until something breaks. I'm just saying be careful...they could be the downfall of the radiator later in it's life. No disrespect man.
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Old Feb 7, 2007 | 08:50 PM
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Originally Posted by Durango_boy
Over time that could pose problems. A small fan is not a huge deal, but a medium to large style will pull and vibrate and tug against the rows of each core until something breaks. I'm just saying be careful...they could be the downfall of the radiator later in it's life. No disrespect man.
By the time the radiator fails I will just by a new one. The car has seen around 7,000 miles in the 6 years I have owned it. Actually, right now I have started the disassembly to rebuild it again since it was flooded.
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Old Feb 7, 2007 | 08:52 PM
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Originally Posted by Durango_boy
Hey Jay, you should get a few new pics of that fan install since the TPI intake swap.
Here you go Durango.



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Old Feb 7, 2007 | 08:55 PM
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That looks great Jay...good job.
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Old Feb 7, 2007 | 10:22 PM
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Originally Posted by zz383corvette
I've read the many threads regarding replacing the factory clutch fan with an electric fan on my 1973 Corvette with ZZ383 crate. One option is to use dual SPAL 11 inch fans mounted directly on the radiator. However, I'm wondering if anyone has installed like an 18 inch (BeCool, Flexolite, etc) in the approximate location that the clutch fan was located. Do these electric fans need to be mounted directly on the radiator? The quandary I find myself with is removing the radiator cowling and installing the dual 11 inch fans or is there an alternate solution. Anyone with thoughts, comments, and pictures would be greatly appreciated.
What problems are you having with the stock fan?
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Old Feb 7, 2007 | 11:01 PM
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I used a 15" electric fan first and it did not keep it cool this summer at 90+ degrees out, I went to the twin Flex-Lite 12" fans with adjustable Themostat and worked awesome. They are super low profile mounted on the back of my radiator, they are pullers also. Here is the best pic I have I can take a better one from a different angle if you want.
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