The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-29-2016, 02:39 PM   #1
chazdo2
Registered User
 
Join Date: Mar 2016
Location: auburn new york
Posts: 71
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.
chazdo2 is offline   Reply With Quote
Old 06-29-2016, 04:20 PM   #2
ga-stepside
Senior Member
 
ga-stepside's Avatar
 
Join Date: Jan 2016
Location: Sugar Hill GA
Posts: 369
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.
__________________
1967 C10 Step side
1970 AMX 390
1977 Datsun 280Z highly modified with '95 LT1 power
ga-stepside is offline   Reply With Quote
Old 06-29-2016, 06:59 PM   #3
chazdo2
Registered User
 
Join Date: Mar 2016
Location: auburn new york
Posts: 71
Re: 1971 Chevy pickup cooling problem

thank you
chazdo2 is offline   Reply With Quote
Old 06-29-2016, 09:09 PM   #4
firedemon
Registered User
 
Join Date: Jun 2015
Location: @
Posts: 890
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
firedemon is offline   Reply With Quote
Old 06-30-2016, 03:37 PM   #5
Thundarr
Registered User
 
Thundarr's Avatar
 
Join Date: May 2013
Location: Coppell, Texas
Posts: 176
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.
__________________
1971 GMC C15 Sierra Grande SWB
1972 Chevy C10 Custom Deluxe LWB
2018 GMC Yukon Denali

Last edited by Thundarr; 06-30-2016 at 03:59 PM.
Thundarr is offline   Reply With Quote
Old 06-30-2016, 04:18 PM   #6
Thundarr
Registered User
 
Thundarr's Avatar
 
Join Date: May 2013
Location: Coppell, Texas
Posts: 176
Re: 1971 Chevy pickup cooling problem

sorry
__________________
1971 GMC C15 Sierra Grande SWB
1972 Chevy C10 Custom Deluxe LWB
2018 GMC Yukon Denali
Thundarr is offline   Reply With Quote
Old 06-30-2016, 04:20 PM   #7
Thundarr
Registered User
 
Thundarr's Avatar
 
Join Date: May 2013
Location: Coppell, Texas
Posts: 176
Re: 1971 Chevy pickup cooling problem

triple post
__________________
1971 GMC C15 Sierra Grande SWB
1972 Chevy C10 Custom Deluxe LWB
2018 GMC Yukon Denali
Thundarr is offline   Reply With Quote
Old 06-30-2016, 06:33 PM   #8
67ChevyRedneck
Hittin E-Z Street on Mud Tires
 
67ChevyRedneck's Avatar
 
Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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.
__________________
Jesse James
1967 C10 SWB Stepside: 350/700R4/3.73
1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc
1968 Pontiac Firebird: Project Fire Chicken!
2015 Silverado Double Cab 5.3L Z71
2001 Jeep Wrangler Sport 4.0L 5spd
2020 Chevrolet Equinox Premium 2.0L Turbo
2011 Mustang V6 ~ Wife's ride
American Born, Country by the Grace of God
1967 CST Shop Truck Rebuild!
My 1967 C-10 Build Thread
My Vintage Air A/C Install
Project "On a Dime"
Trying my hand at Home Renovation!
1965 Mustang Modifications!
67ChevyRedneck is offline   Reply With Quote
Old 07-01-2016, 07:49 AM   #9
chazdo2
Registered User
 
Join Date: Mar 2016
Location: auburn new york
Posts: 71
Re: 1971 Chevy pickup cooling problem

thanks a ton guys!!!
chazdo2 is offline   Reply With Quote
Old 07-23-2016, 05:21 PM   #10
SparkyRnD
Registered User
 
SparkyRnD's Avatar
 
Join Date: Dec 2011
Location: acworth georgia
Posts: 890
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.
__________________
www.RnDFabrication.com
Custom Radiators, Valve Covers and Overflow Tanks
SparkyRnD is offline   Reply With Quote
Old 07-23-2016, 05:28 PM   #11
davepl
Registered User
 
davepl's Avatar
 
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought
1969 Pontiac 2+2 427/390 4-speed Coupe
1969 Pontiac 2+2 427/390 4-speed Convertible
davepl is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:50 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com