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Re: electric fan recommendations BB A-Body
[Re: ryanf]
#1540836
12/01/13 12:01 PM
12/01/13 12:01 PM
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Joined: Jul 2007
Posts: 1,526
North Carolina
cjskotni
pro stock
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pro stock
Joined: Jul 2007
Posts: 1,526
North Carolina
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Quote:
Hello, putting together my 70 swinger with a 383 BB and the mechanical fan is a little to close for comfort with my 26" Champion radiator. What electric fan would you recommend for a street driven BB? I had a HHR fan laying around and thats just a little to thick.
Thanks
Ryan
I have the dual fan 'BeCool' unit in my Charger. Any dual fan unit should work (or have a better chance) as it will have the gap in the middle between the two fans as opposed to the single fan dead center.
The unit is around $250 or so on Summit (Spal is the manufacturer I think). In addition, you will need the relays/harness/thermostat. They have the kit you can buy maybe total $650 or so with everything.
I have a Summit aluminum crossflow radiator in my Charger with the dual fan setup. Keeps the car <= 190* on a hot day idling with A/C on. Motor is a 500ci stroker.
Get ready because you will have the people who couldn't make it work tell you to 'just go mechanical'. Nothing wrong with a mechanical setup (yes I agree it works fine) but electric does have benefits.
Takes planning and $$$ but electric can be made to work rather well. Biggest thing is you need to wire it correctly and upgrade your alternator if you are still on the OEM round/square back design.
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Re: electric fan recommendations BB A-Body
[Re: ryanf]
#1540837
12/01/13 12:19 PM
12/01/13 12:19 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Any possibility of pressing the WP "cross" rearward slightly so that you could go ahead & use the tried & true MP thermal clutch fan? As you know that would require alt/crank pulley front/rear spacing changes to compensate along with likely a different WP pulley. Replacing the 4 pump bolts with "buttonhead" bolts gives you more clearance there. Just an avenue to consider. I ain't never run an electric but generally from what I've read on here most of those setups dont cut it
live every 24 hour block of time like it's your last day on earth
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Re: electric fan recommendations BB A-Body
[Re: Skeptic]
#1540839
12/01/13 04:35 PM
12/01/13 04:35 PM
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Joined: Jan 2003
Posts: 5,450
So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,450
So Cal
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Run whatever... In our experience, for certain Mopar friends we have replaced their electric fans systems back to the OE mevchanical fans.. The major issue is the electric fans draw high very current, which means one has to totally overhaul the entire OE wiring system. We have found many overheating issues are due to: 1. Plugged radiator 2. Block needs flushing 3. Incorrect timing 4. Incorrect fuel jet/settings IMHO... The Mopar OE cooling systems are overengineered, and I like to keep things original whenever possible.. Have a great holiday season..   Just my $0.05... 
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Re: electric fan recommendations BB A-Body
[Re: Sinitro]
#1540840
12/02/13 09:29 PM
12/02/13 09:29 PM
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Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
goldduster318
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
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I used a 95-99 Ford Contour V6 fan on my small block. Since I did no clearancing whatsoever with the small block, I'll bet you could get it to work with a big block.   This is a twin fan setup with two speeds. There is a pretty high amp draw on HIGH, but low isn't too bad (I belive 15-18a) It will cool my 470hp 340 all day when its 90 out and cycles between off and low even when idling. My water temp never goes over 195. You will need: two 70a relays 60a Maxi Fuse Upgraded alternator/charging system wiring (I use a 78a Delco 12si which is fine) Fan controller that will support dual speed fans (I have the dakota digital one) This fan setup has wicked airflow, and they are easy and cheap to get. Its also very quiet.
'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
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Re: electric fan recommendations BB A-Body
[Re: rck850]
#1540841
12/03/13 05:04 PM
12/03/13 05:04 PM
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Joined: Sep 2003
Posts: 1,168
Vancouver, WA
MoparMarq
super stock
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super stock
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
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Quote:
This is an old picture but these have worked great for about 8 years. I don't remember the model number though.
That looks like the 240 puller, though I may be wrong. Fairly thin. Works great on my Toyota, but might not pull enough air on a BB. The RR also has Flex-a-lite fan, though it's the 480/490 model. Same size shroud and fan diameter, but thicker motor on each. Pulls a s***load of air through it.
Nice thing about the Flex-a-lites is parts availability. Just replaced the fan blades on the 240 unit in the Toyota this summer after 10 years. Bought 'em from Summit.
Motor housings just barely clear the nose of the water pump pulley on the RR, but they straddle it, so still LOTS of room.
Flex-a-lite controller is digital, so ramps up power draw slowly without spiking.
Controller on Toyota is http://www.dccontrol.com/constant_temperature_controllers.htm FK-35 unit which apparently is not made anymore, but the FK-55 unit is identical (and probably capable of higher power throughput, I'm guessing). Been in the heat of the engine bay for over 10 years and still going strong. Also digital, so ramps up power slightly without spiking.
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