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Old 06-29-2016, 02:39 PM   #1
chazdo2
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1971 Chevy pickup cooling problem

My 1971 pickup is having cooling issues. Its from Arizona and has a large aluminum radiator with an electric fan on it. The fan died. I was wondering if I just put a regular fan driven by the water pump pulley would that be enough? I live in upstate New York so tremendous outside heat is not an issue. The pump sits 9 inches from the radiator. Any and all suggestions for this problem are appreciated.
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Old 06-29-2016, 04:20 PM   #2
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Re: 1971 Chevy pickup cooling problem

If you go with the stock fan get a fan shroud too or it won't work at all. Make sure the fan is inside the shroud about 1/2" or a little more. Again if its outside the shroud it won't work very well.
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Old 06-29-2016, 06:59 PM   #3
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Re: 1971 Chevy pickup cooling problem

thank you
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Old 06-29-2016, 09:09 PM   #4
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Re: 1971 Chevy pickup cooling problem

I live in upstate ny too I also have an aluminum rad no shroud and just a 4 blade fan no clutch it cools just fine
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Old 06-30-2016, 03:37 PM   #5
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Re: 1971 Chevy pickup cooling problem

I've got a 71 GMC and recently switched to an electric fan. It cooled OK with the stock fan and no shroud even here in Texas, but I switched because the constant drag of the pulley driven Fan on the motor.

My electric fan setup has two fans. I even disconnected one of the fans and its still cools just fine in the heat with full AC running.

I would recommend replacing the electric fan because my motor revs easily now. In short, it has noticeably more high end power.
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Old 06-30-2016, 04:18 PM   #6
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Re: 1971 Chevy pickup cooling problem

sorry
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Old 06-30-2016, 04:20 PM   #7
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Re: 1971 Chevy pickup cooling problem

triple post
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Old 06-30-2016, 06:33 PM   #8
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Re: 1971 Chevy pickup cooling problem

You might be able to run just a fan up there. I grew up near Jamestown... it flat out does not get hot there...

*IF* you run a fan only, it needs to be spaced 1" from the radiator, otherwise it won't work well.

If you do use a shroud, the fan just needs to be about 1/2 in / 1/2 out, spacing from the radiator doesn't matter.
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Old 07-01-2016, 07:49 AM   #9
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Re: 1971 Chevy pickup cooling problem

thanks a ton guys!!!
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Old 07-23-2016, 05:21 PM   #10
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Re: 1971 Chevy pickup cooling problem

you can, but make sure to use a shroud as it will make a lot of difference on that application.
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Old 07-23-2016, 05:28 PM   #11
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Re: 1971 Chevy pickup cooling problem

If you've already got the relays, temp sensor, and everything else for the electric, I'd just replace the electric, as a good fan, shroud, and clutch will add up.
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