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12-03-2024, 06:58 PM
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#1 |
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Registered User
Join Date: Jan 2024
Location: EL PASO
Posts: 192
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Original Radiator Fan...Switch it out for a lighter One?
The old one cools fine but I'm wondering if a lighter fine would be beneficial. Less stress on the pulleys/bearings? It's easy enough to switch out.
TIA |
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12-03-2024, 07:13 PM
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#2 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,031
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Re: Original Radiator Fan...Switch it out for a lighter One?
If it ain’t broke don’t fix it, just my opinion.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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12-03-2024, 07:14 PM
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#3 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Original Radiator Fan...Switch it out for a lighter One?
Sometimes those lighter fans explode and put nasty 4 inch gashes in your freshly painted hood.
You got a link to what you’re looking at? |
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12-03-2024, 07:26 PM
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#4 |
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Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,122
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Re: Original Radiator Fan...Switch it out for a lighter One?
Yeah, flexfans have been rumored to try and kill as well as slice through hoods or whatever is in the way when they let go.
What fan does the OP have? Clutch fans with rigid blades are considered good if the clutch works. If the fan clutch is disengaged, it doesn't matter much what the fan weighs. |
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12-03-2024, 08:05 PM
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#5 |
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Who Changed This?
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,673
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Re: Original Radiator Fan...Switch it out for a lighter One?
Yup, clutch fans are best. One of my brothers knew a guy who was killed when his flex flan threw a blade.
As for strain concerns, consider that the same ancillary equipment is used on 40- 60 series trucks. Bearings and so forth seem to hold up fine on them.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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12-03-2024, 09:12 PM
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#6 |
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Registered User
Join Date: Jan 2024
Location: EL PASO
Posts: 192
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Re: Original Radiator Fan...Switch it out for a lighter One?
Yeah, I think I've picked up some sort of understanding that when you drop a 350 into a 1968 C/10 the engine sits kind of far back in the engine bay (closer to the firewall) and further back from the radiator. Maybe the automatic xmission causes that, I don't know.
Anyway the fan that's in there right now does have what looks like an extension on it to get it closer to the radiator. The fan shroud I was told to put in there is for a big block 4Wheeler (fits) nice and my new Chinese radiator work great. It just seemed like that antique fan seems kind of heavy. But if consensus here is leave it alone, I'll just do that. Actually my truck runs great for all the cobbling done on it, I got to get to the ball joints and tie rod ends and rebuild the parking brake entirely! Happy Holidays..... |
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12-03-2024, 10:44 PM
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#7 |
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Who Changed This?
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,673
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Re: Original Radiator Fan...Switch it out for a lighter One?
Let's see some pics. I'm betting you're set up fine, though.
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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12-03-2024, 11:05 PM
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#8 | |
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Registered User
Join Date: Jan 2024
Location: EL PASO
Posts: 192
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Re: Original Radiator Fan...Switch it out for a lighter One?
Quote:
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12-04-2024, 08:53 AM
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#9 | |
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State of Confusion!
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,216
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Re: Original Radiator Fan...Switch it out for a lighter One?
Quote:
__________________
Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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12-04-2024, 09:17 AM
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#10 |
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All stock and staying that way
Join Date: Jul 2003
Location: Elkland, PA
Posts: 1,822
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Re: Original Radiator Fan...Switch it out for a lighter One?
For the most part, the OE fan is of much better quality than almost every aftermarket replacement, even being over 50 years old.
If it's not damaged, leave it be.
__________________
1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion..  1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor...  2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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12-04-2024, 02:33 PM
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#11 |
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Post Whore
Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,350
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Re: Original Radiator Fan...Switch it out for a lighter One?
As long as the fans are balanced there isn't gong to be a noticeable difference in load on the bearings by going to a lighter one. Your biggest load on the bearings comes from the belts side loading them.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.  RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 Last edited by HO455; 12-04-2024 at 02:35 PM. Reason: -2 spelling |
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12-04-2024, 02:43 PM
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#12 | ||||
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"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,971
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Re: Original Radiator Fan...Switch it out for a lighter One?
If a SBC is swapped in for an inline 6 and the I-6 engine mounts on the frame are used the engine will sit back closer to the firewall. There are mounts for V-8's and I-6's.
Flex fans are trash. Stick with an OE fan, and if it doesn't have a clutch, add an OE fan that does. Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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