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#1 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Question about stock fans?
So I've been running a hood splitter fan for the past 3 years (flex fan) and I recently converted my truck from a long water pump to a short water pump. The fan now sticks out of the fan shroud. Rather than buy another spacer for the flex fan, I'd rather fix the truck properly with a "normal fan."
I've WAY overblown my budged on my Vintage Air install and am running short on funds and the 4th is coming up ![]() It needs to be able to fit within the shroud on a short water pump truck in the "correct" V-8 position. I think the fan would need to be approximately 3" to 3 1/2" away from the pulley to operate properly within the shroud. Thanks ![]()
__________________
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! |
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#2 |
Registered User
Join Date: Feb 2007
Location: Mt. Sterling, Ky.
Posts: 205
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Re: Question about stock fans?
not sure about what year clutch fan would work but an early GM for a v8 truck should work. as far as being out of the shroud may need to replace shroud w/ one made for a short nose water pump. correct me if I'm wrong but I think there was difference in depth of the shrouds for short and long water pumps. good luck!!!
Eric |
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#3 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
All 67-72 trucks had short water pumps. Trucks switched to long pumps in '73. I think GM cars switched in '68 or so.
__________________
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! |
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#4 | |
Registered User
Join Date: Feb 2007
Location: Mt. Sterling, Ky.
Posts: 205
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Re: Question about stock fans?
Quote:
Eric |
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#5 | |
Registered User
Join Date: Feb 2007
Location: Mt. Sterling, Ky.
Posts: 205
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Re: Question about stock fans?
Quote:
Eric |
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#6 |
Prestige member Old Farts Club
Join Date: Nov 2005
Location: Cleveland
Posts: 502
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Re: Question about stock fans?
I'm running a 7 blade & clutch in mine with a slightly healthier 350 no problems. I thought it was a stock set up but from what everyones saying it must be a later model, maybe same as motor( 1978 K-20 4 bolt main)
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Hey sombodys gotta do it! ![]() |
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#7 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
My '72 has a stock 7-blade clutch fan...
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#8 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
67CR, what does your fan feel like if you rotate it by hand? It should be a bit gooey, kinda like it's in molasses...
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#9 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
It's a cheap crappy 18" flex fan.
__________________
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! |
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#10 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
Oh shoot, I know you said flex fan earlier, then I somehow got confused & thought you had a clutch fan that wasn't working right! Auggghhhh!!
![]() ![]() I'd definitely try a good fan before giving up on your radiator. My OEM radiator was a 3-row (with factory A/C; maybe 67s were different) and it worked great until it finally rotted out a year or two ago.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 06-28-2007 at 08:11 PM. |
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#11 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
I've got to figure something out.... I got the A/C charged today... works awesome
![]() New problem, engine overheating in traffic ![]() I know it's got to be because the fan. It's currently 1/2 out of the shroud and when I put my hand in front of the radiator it has nowhere near the pull it used to. Before the A/C install my truck had a long water pump, now it has a short, so the fan moved about an inch, inch and a half closer to the motor. A 78 motor probably has a long water pump? What are people using for fans for short water pumps? A stock one? I can order a 3" spacer for my fan which should fix my problem, but I'd rather replace the fan if I can ![]()
__________________
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! Last edited by 67ChevyRedneck; 06-28-2007 at 06:55 PM. |
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#12 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Question about stock fans?
your fan is supposed to be 1/2in and 1/2 pout of the shroud.
Stock, *I THINK* came with a clutch if it had A/C |
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#13 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
I posted right after you did.... do you know of any newer clutch fans that would fit?
__________________
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! |
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#14 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
Correct on both points...
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#15 | |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
Hmmmm, just found this online
Quote:
![]() I have a 3 core automatic radiator.... maybe it's not big enough?
__________________
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! |
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#16 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Question about stock fans?
I looked on autozones site and I can buy a new fan and clutch for $80. Stock style. I hope that would fix my cooling problem?
__________________
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! Last edited by 67ChevyRedneck; 06-28-2007 at 07:43 PM. |
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#17 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Question about stock fans?
I've been looking through parts catalogs and parts places online and I'm only coming up with a 6 blade fan. Anyone know where I can get a 7 blade one?
__________________
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! Last edited by 67ChevyRedneck; 06-28-2007 at 07:45 PM. |
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#18 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
Might have the best luck in junkyards -- look for larger GM rear-drive V8 cars, esp. Caddy, Olds, Buick... or full-size trucks. Just be sure to measure twice, buy once!
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#19 |
"Trucks with Class"
![]() Join Date: Jul 2000
Location: OLYMPIA, WA, USA
Posts: 8,132
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Re: Question about stock fans?
Your truck in stock form had a 7-blade clutch fan and 4-row radiator for AC (a 5-blade clutch fan for non-AC). Don't even think about that cheapie 4-blade solid fan.
Later clutches will work fine, but the fans were bigger in diameter and often hit the shroud...that can be fun LOL. AC makes them run hotter, so get the big radiator...new, not used and half plugged up. |
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#20 | |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Question about stock fans?
Quote:
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__________________
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! |
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#21 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
|
Re: Question about stock fans?
^That's what I'm hoping.... FINGERS CROSSED!
It did fine on the "open road" but 35 minutes in traffic and 94 degrees outside today got her up to 210-220 range. I was totally unprepared for this swap. I had to change things I didn't think I'd have to change, buy tools I didn't have, pay someone to evacuate the system (they were totally cool and used my R-134A and charged it for free ![]() ![]()
__________________
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! Last edited by 67ChevyRedneck; 06-28-2007 at 09:31 PM. |
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#22 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,646
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Re: Question about stock fans?
Quote:
At lower speeds, airflow is reduced and a fan is needed to move enough air through the core. This is when you are running hot -- and it sure seems to point to the fan.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay Last edited by Stocker; 06-28-2007 at 10:00 PM. |
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#23 | |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: Question about stock fans?
Quote:
I'm running a 185 degree thermostat and even before I installed the A/C the truck ran consistently at 190. I'm going to go to two 'yards that I know of to see what I can find. My pops said 80's Caprices and trucks should have what I need. I hope I can find something, most yards around here only have "newer stuff."
__________________
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! |
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#24 |
Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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Re: Question about stock fans?
When i needed a flex fan I hit the J-yard witha tape measure. I had to find a 17" because it was hitting the Bel Air shroud. Should cost you about 20.00. You are doing right by ditching the flex fan!! My suggestion is to add an electric pusher fan on the front with a trinary pressure switch so that the electric fan will come on with the A.C.. It would help cool the engine down considerably in traffic.JMHO.
Shawn
__________________
1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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#25 |
Registered User
Join Date: Apr 2004
Location: Salem, OR
Posts: 127
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Re: Question about stock fans?
What kind of thermostat are you running?
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Josh '70 Custom Camper / 20 |
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